Sine and Cosine Rule 1 (GCSE Higher Maths)- Tutorial 17

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This video is a tutorial on Sine and Cosine Rule. Please make yourself a revision card while watching this and attempt my examples. Straight away then move to my video on Sine and Cosine Rule 2 - Exam Questions 18. This video is for students attempting the Higher paper AQA Unit 3 Maths GCSE, who have previously sat the foundation paper. Explanations are aimed at being as simple as possible and so students who previously did the Foundation paper can access. They would also be useful for students who have always sat the higher paper. www.hegartymaths.com www.hegartymaths.com/

[@billyleeds8512]

My teacher took about 3 months to teach me this and I still never got it. Watched this video and learnt it perfectly in 20 minutes. Thank you

[@ddlodds6877]

It's really not that hard boi

[@mhrmhfathima3342]

totally agree

[@HalFilm]

haha yeah same

[@falruach]

I know right

[@Thanos-ho6us]

same

[@restaurantpandemic7762]

"It is given in the formula book" *cries in new GCSEs*

[@toxicology5547]

Restaurant Pandemic 😩😩😂

[@S63TU]

bruh understandable

[@balletboy12345]

*Laughs in Coronavirus*

[@potatoyama8045]

i wish i did gcses back then. Theyre killing us with all this memorisation i swear

[@ishanpatel5388]

@Restaurant Pandemic it's really not that hard to remember

[@johnb23433]

"don't care whether they call it B, C , JIM" - Hegarty maths 2 June 2012😂

[@jennifersolini]

yes-

[@katherinebaggott5202]

this made me cry laughing

[@zalinasingh6496]

I don't know about anyone else but this video is magical it is like a revelation. Everything can be understood and each step is so beatifully explained. Well detailed. Best mathematics video

[@otsebby5440]

@AWhiteBlob yes

[@priyanshiisingh]

@@otsebby5440 this is so funny hahaha

[@aryan8577]

Ifkr

[@simonlevett4776]

The only problem for some students is remembering it afterwards [along with all the other parts of a maths syllabus], plus another 5 or 6 subjects which need to be mastered for exams.

[@johnsmalling]

Teacher's been trying to teach our top set class this for a whole year, no one understood it. I watched this 20 min vid once and I know it all! Thanks a lot!

[@benedward8559]

***** same

[@kronkurr9737]

My teacher taught my class this in one day somehow

[@muaminhugsy4964]

One day before the exams and im getting taught by a British teacher or utmost brilliance; Thank You Good Sir! And keep up the great work!

[@HEGARTYMATHS]

Muamin Hugsy Hiya Muamin - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@HEGARTYMATHS]

HI there. Really delighted if I have helped you, Best of luck revising and good luck in the Unit 3 on Monday and if you think the video is good please share with family, friends and school. Best wishes. Mr Hegarty

[@danielhastings1471]

Doing my GCSEs in the next couple weeks, these vids have took me from a grade 5 to a 8, and still some time to improve

[@birdie7344]

@@danielhastings1471 u watched his videos and past papers that improved ur grade right?

[@danielhastings1471]

@@birdie7344 Certainly did, finished my last gcse today

[@scroopydoopers2056]

I just kept getting syntax error every time time I followed the steps

[@danielwarneck7571]

probably learnt more here then in my math class

[@alphaexpress6881]

daniel warneck you should pay attention in class more then.

[@abitgaytbh4463]

Tatabusa Express some teachers just suck pal, don’t be a dick

[@HEGARTYMATHS]

Good luck! Glad if I helped! Mr H

[@bahar1082]

You helped alot thanks

[@shreyas8079]

Lucky 822 oh no how?

[@imgoingonholidaytovietnam3631]

I'm homeschooled, but it's difficult for me to learn on my own and I always end up having fights with my Dad when he tries to teach me, plus my exams are in 3 weeks so thank you, you're channel is helping.

[@camalex7782]

How did it go if you don't mind me asking ?

[@lordpoppadom7813]

Have a like just for the name

[@matilda_barton1405]

it’s been 5 years, how did it go?

[@DeeLillyHannah]

you taught this better than my teacher. Your trick at switching it from a side to an angle seems so straight forward but it really helped, thank you

[@HEGARTYMATHS]

DeeLillyHannah Hiya Dee - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@rebeccajohn8672]

You're such an amazing teacher! I wish my maths teacher was like you, but he constantly throws tantrums and screams at us, throws scissors around and scrapes the smartboard until there are huge marks left on it, bullies the students and makes them feel stupid, dOESN'T TEACH WHATSOEVER, you get the point. Anyways, I would give anything to swap him with you, Sir! You have a talent for teaching so efficiently and precisely!

[@kai_johnsonn]

Oh how I miss the days of the formula booklet.

[@robster6681]

2017, we don't get no formula booklet. Wish me luck.

[@outerspacelucy2328]

+Robbie | Robster I'm taking my exam this year so I just get it, good luck with that

[@robster6681]

outerspacelucy It's so dumb D: You're so lucky haha, Good luck :)

[@alphaexpress6881]

Robster In my country we still get a forumula sheet that tells us all the sine rule and cosines rule, curve surface area of sphere and cone, -b+-√b^2-4ac /2a, trigonometry double angle forumulas, trigo addition forumalas, trigo identities, 1/2abSinC.

[@minttykpop9836]

Tatabusa Express for edxcel math ?

[@mattheword6621]

how did it go??

[@fratikus114]

a day before my exam, bossed it in a 20 minute video rather a while month

[@HEGARTYMATHS]

You are most welcome and thank you for taking the time to tell me how it went! Glad if my video helped! Cheers. Please spread the word to your mates, school and family - would be nice to helpe even more pupils. Best wishes and do let me know what result you get. Mr Hegarty

[@HEGARTYMATHS]

Dear Muasim - you are very welcome indeed. Best of luck in those exams. Let me know how you get on and be sure to check out hegartymaths.c.o.m. for all my vids and share with your mate. Best regards. Mr H

[@muaminhugsy4964]

sure will, exam wnet well, and i am hoping to get in the late 80's or early 90's, and i actually did link this vid to a friend last night, so great work all in all! and yup, i sure will check with the website ! Peace

[@HEGARTYMATHS]

Nice one! Let me know when you get that 80! Mr H

[@HEGARTYMATHS]

Muamin Hugsy Hiya - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@bernardleonard6039]

HEGARTYMATHS "

[@asleshasalkar4356]

Thank you so much, your videos are fantastic and a lifesaver for so many students including myself. I tried so many different different GCSE Maths tutorials on youtube and non of them are clear and concise as yours.

[@ME11YT]

i just wanted to come back here after receiving 100% on my math test to thank you for your help! to anyone doing trig geo or scales I recommend this video specifically and the whole channel is amazing!

[@HEGARTYMATHS]

Niamh - thank you so much for your comment. Really delighted you are doing so well! Please check out hegartymaths.c.o.m. for loads more of my videos and share with your family, friends and school. Very best wishes and keep up the hard work! Mr H

[@HEGARTYMATHS]

Glad you liked!

[@arminsburnedbody8248]

i liked 😋

[@brocklesnar8780]

I liked it

[@newname9725]

wow you made me an expert in 20 mins

[@HEGARTYMATHS]

Lawl Junior Hiya Lawl- thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@newname9725]

HEGARTYMATHS Already have Mate,my way to repay you ;)

[@abdulkadirmohd3622]

+HEGARTYMATHS tnx alot

[@HEGARTYMATHS]

Dear Fatima - thanks so much for your lovely comment. Really happy to have helped you!!! Please check out the brand new website hegartymaths.c.o.m. for loads more maths help. Please share with your family, friends and school to. Keep up the hard work and best wishes. Mr H

[@Gee-Gee-Bee]

Wow!!! Thank you so much for this video! You explained to me what my teacher has been trying to get my to understand for a month in one short video. I totally understood what you were saying. Very well laid out and you got straight to the point. Thank you sooooo much! Feel a lot better about my exam now!

[@ladyjay7005]

You are the best under the sun, I'm in a Zimbabwe college and they teach, I have been watching your videos for like eternity

[@emilybooth6277]

I stumbled onto your channel this morning in a haze of triangle panic - I have my paper 2 mock tomorrow - and can I just say, I have been revising for about 4 hours and YOU'VE SAVED ME THANK YOU

[@HEGARTYMATHS]

Emily Booth Hiya Emily - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@rahalaadventurer6646]

الله اعطيك الصحة مدى الحياة يا اعظم Hegarty! ياربي استاد ماشاء الله عليه ولا حول ولا قوة الا بالله شفناك بعين الرحمة . God bless you! . ❤❤❤❤👍

[@HEGARTYMATHS]

Jennifer. Really delighted if I have helped you, Best of luck revising and if you think the video is good please share with family, friends and school. Best wishes. Mr Hegarty

[@aisha9154]

What an amazing teacher. Thank you SO much sir. You're literally the best Maths teacher I've ever seen :)

[@HEGARTYMATHS]

LifeOfAisha Hey Aisha - thanks loads for the most lovely comment!! If you have 1 minute spare today could you vote for hegartymaths in this competition. Would mean a lot to me. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Have a great weekend. Mr H

[@unnamed7570]

e "I've Ever heard" is what you meant to say, because you have never actually seen him, i think you need to head over to the grammar section of youtube

[@unnamed7570]

Alex Entwistle sorry😂

[@detiengocrispin7045]

Aisha that's à wonderful Teacher u'er Amazing 😘

[@scottsinclair7996]

You haven't me ms.hickey!

[@willhunting264]

I'm taking a police radar/Lidar instructor course in April. I gotta be honest. I am 100% math illiterate. I have zero math skills. I've been studying for 2 weeks now on KZbin. You are the 1st instructor to break it down nicely. I have to do cosine problems for this course. I'm very nervous. Thank u for making this understandable. Also. I have hardly any algebra experience and no trig experience.

[@mattyhendo9100]

Learned all my trig at 2:00 AM... What you saying fam

[@malaika-kh]

mumsss, well 10pm for me but-

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I'm saying that you're a roadman bruv

[@hughmongusfeline3452]

@@zkillerwolfz3308 *ARE YOU SKUNKED M8*

[@zkillerwolfz3308]

@Hamza Haidari Go back to india hamza you fucking neek

[@some1ulove162]

My guyyy i woke up at 5 tho

[@mattbeamend]

The new GCSE has no formula booklet :(

[@minttykpop9836]

For edexcel too ?

[@andrey7906]

You have to remember all the Formulas???

[@suriabegum9039]

You’ll get the formula for some like the volume of a sphere

[@chickenfoot2423]

Suria Begum the most it’ll say is one, n it’ll be in the actual question

[@sydneygabriel5069]

I dont even have gcses, let alone a booklet

[@shanethegriff6756]

I’ve watched tutorials 15 through to 17 and I want to say I find your videos fantastic and easy to follow. Thanks for your time and your help!

[@flamy6905]

I've learnt more from you and Khan academy than how much my Maths teacher could EVER teach me. You make maths so easy. Love it.

[@rosiepettinger2627]

my exam is tomorrow and you have actually saved my life thankyou!!!!!

[@alikghosh9942]

Nice

[@alikghosh9942]

I am indian i dont tooke to English sorry mam

[@luker8342]

Thank you for this video, you explained it so well and I finally understand.. My teacher in school only caters for the top maths students in my class so she doesn't explain things in detail and just glosses over things like this assuming we know whats going on! Huge help thanks a lot

[@HEGARTYMATHS]

Luke Russell Hiya Luke - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@HEGARTYMATHS]

You're very kind! Thanks for the feedback - it makes making all these vids worthwhile!

[@TheAdamsan1]

I'm calling it a success when you get from D grade to an A grade in 3 weeks. Thankyou so much for these videos on maths helped me out so much!!!! just goes to show that my teacher is not the best at maths

[@darks.digitals]

Thanks so much. I have never done this in lessons and feel left out when its been discussed but I decided to be brave and come on here which i subscribed a long time ago. I really understand and it seems so easy. Thanks for doing this. You are a hero

[@curtistilbo]

your videos are brilliant man!

[@HEGARTYMATHS]

Curtis Tilbo Hiya Curtis - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@detiengocrispin7045]

Curtis Tilbury hey u'er si brillant ans u have Hugh Braun work i wish u coule Give somme off ur interligne ce bye😍😀😆🤗🤔

[@jthawken123]

I'm in Engineering Mechanics with Statics - Vectors. Hadn't done this sine/cosine rule crap in 8 years. Professor just starts doing this stuff on the board like we were all pros at it, I almost hyperventilated I was so panicked! After just this video, all the homework problems are a BREEZE! You've saved my life, sir. Thank you so much!!

[@bibliophile2481]

You're the best math teacher on this planet. I never understood these rules but you explained them so well. You're just amazing!

[@Gallopover]

Saving me for my exam tomorrow, thanks a lot :)

[@HEGARTYMATHS]

Really hope it goes well - best wishes and let me know how you get on. Would be dead grateful if you'd pass on the message of hegartymaths so can help more students. Best regards. Mr H

[@HEGARTYMATHS]

Gallopover Hiya - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@zezima1967]

You're a life saver, Thank you

[@HEGARTYMATHS]

+Zezima You are totally welcome. Thanks for taking the time to say thank you. Best wishes and keep working hard! Mr H :-)

[@mhrmhfathima3342]

WOW!!!!! Hegartymaths teachs maths so well . thank you so much!! YOURE A LIFE SAVER

[@AliG-yu2bn]

HEGARTYMATHS this is so fucking useful g

[@_sc11]

#SavingYouFromGettingAnAssWhoopinByYourParentsForFailing

[@HEGARTYMATHS]

Hi there. You are most welcome and thank you for your kind words. Best of luck in your forthcoming exams and please share my channel with family, friends and school to help others. Best wishes Mr Hegarty

[@nannaeighteen8464]

Studying gcse higher level with my grandson and you are the easiest tutorial to understand. Thanks so much !

[@SpitiAndrea09]

God bless you! Really helpful and I appreciate it a lot. Keep the good job.

[@HEGARTYMATHS]

Loukas Paraskevas Dear Loukas. Thank you so much for your kind comment. Im very delighted to be of help and it's nice of you to spare the time to say thanks! Check out www.hegartymaths.com/ for loads more help esp the GCSE section there. Best wishes. Mr H

[@HEGARTYMATHS]

Loukas Paraskevas Hiya Loukas - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@bilaltariq4990]

Literally the day before my test- Anyways, this really helped

[@ChronosVT]

Oh my god you don't know how much of a lifesaver your channel is to me, I understand things that I never used to a lot easier now so thank you very much, feeling much more confident for my maths exam tomorrow now

[@22Wattie]

I am 57 years old and have always wanted to know how to do this. This is the first time I have got it. Thanks, so simple.

[@benrichardson6871]

Wish I’d have found these videos earlier not a day before my paper 2.. hoping I can push my 6 up to a 7

[@c.darwin9259]

Ha I don’t even have my results yet for the first one, any way good luck tomorrow.

[@sunset9598]

Thank you very much sir for taking your precious time for making this video. This helped me a lot ..thank you very very much sir!

[@adamc8999]

helped me learn this all on the night before the exam, thank you!!

[@parmz1]

I'm not even studying math. I've actually not studied for years and have no need for this lesson. That aside, it is so well explained that a man like me who isn't practising for an exam can pick it up quickly. I just learnt a but for fun. What a simple and easy to follow vid. Thank you

[@hannasolo2561]

You are the best teacher ever😆 I finally know how to do my sine and cosine rules question ,Thanks so much!😊

[@annasango8106]

U the best

[@sharonpious5249]

how do you put the calculation into the calculator (14:51)

[@rachanathapa4824]

Sharon Pious you click the root square and then there is a ans button next to equal sign and then press equal to sign . That’s how you get the answer

[@HEGARTYMATHS]

Is your calc in radians mode? It must be in degree mode and say DEG at top. Change in mode settings

[@HEGARTYMATHS]

Hafsa - You are most welcome! I am really happy to have helped as it is nice to think the time I spend making the vids is now helping pupils. It's very nice of you to say as well. Please share with family, friends and school etc in case it could help them. The very best of luck for your exam. Mr Hegarty

[@caolainhession]

are u a comedian hegarty? the Jim joke u used twice was Fucking classic

[@klonde3645]

+Caolain Hession exactly lmao

[@reeceohara9124]

is it bad that my calc paper is tomorrow and i havent revised yet

[@saify9149]

no, you gonna be fine, WE ALL BELIEVE IN YOU, U GONNA GET A***

[@TheSilentRoar]

Yes, but neither have I :0.

[@chriswilliams-tn7ii]

bring it on. I've got it as well

[@saify9149]

+TheSilentRoar it's ok lads we all gonna pass

[@Oramuk]

leaked paper on my channel

[@olamideakintokun4537]

Been trying to understand this for the past two years. Thank you so much sir, I wish you were my maths teacher.

[@elliecurwen200]

i have my unit 3 exam tomorrow morning and i've slaved over maths for sooo long and i'm just praying for a C i'm absolutely gutted that i've just found this channel tonight, i've learned more tonight than in the passed year with my teacher, even now I completely appreciate all the time and effort you must put into this channel

[@CaitlinBaxter32]

Hate how next year the sin & cos rules are not in the formula booklet, just one more thing to remember 😢

[@SlushSnail]

enjoy A-levels now lol

[@wafa1606]

@@SlushSnail now YOU enjoy a-levels

[@SlushSnail]

@@wafa1606 I hate karma lol 😢😢😢

[@kellyharris3737]

Great video! Only, I'm typing in the formula into the calculator and getting different answers, where am I going wrong?!

[@rainb1750]

Write the first question on the cos as 12power2 +17power2-[2×12×17cos(47)]

[@alessiaerriu8811]

We had 5 different teachers when we were being taught the sine and cosine rule and all of them taught it in different ways! In 20 minutes you have made this so simple and understanding. Wish you were a teacher at my school!

[@the_golden_eagle]

Thanks to you for having that gratitude towards us. This is a topic that I never dis in class, and I'm sure I wouldn't get if I did it in class. The way you explain it is fantastic.

[@sammyttiw4762]

This is brilliant thank you...anyone ever said you sound exactly like Simon Lowsley in Waterloo Road? 😂

[@boluwatifehundeyin8942]

Charlie J The explanation was clear men thanks a lot

[@HEGARTYMATHS]

[@TheRuinedUniverse]

HEGARTYMATHS interesting comment

[@codingwithoutbordersonline1945]

TheRuinedUniverse It has such a deep meaning. It demonstrates the empty feeling we all have about life.

[@HEGARTYMATHS]

You are most welcome! Glad if my video helped! Nice to here the paper went well and you smashed the last question.. Please spread the word to your mates, school and family - would be nice to helpe even more kids. Best wishes. Mr Hegarty

[@JakeKenyon3]

you are my savior! ive been struggling with the whole of trig since year9 and now i understand all of it, 2 days before my exam!thank you so much :)

[@Xxextreamelementx]

That moment When I learn more from u than my teacher

[@HEGARTYMATHS]

Alan Sabu I need your urgent help. Get as many people as you can to vote before 10am Tuesday morning (try to get 5 votes at least). We're losing :-( We need the votes to get us through. Thanks loads. Mr H :- ) www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/

[@elijahj-l825]

I like HOW he SLOWLY goes through every problem other than my teacher.... Its just so sad to see someone see others INCLUDING me struggle through these things that should take TIMMEEE... Math is NOT a quick process. Its a slow and tedious one.

[@akshatkothari2705]

To a smart brain anything seems easy☺

[@ahmedahmedarshad7817]

@@akshatkothari2705 Well everyone does not have a smart brain😒😭

[@tomatkins9747]

Hey Hegartymaths, I have my exams in 3 weeks, and my maths teacher recommended your channel for extra-curricular revision. I must say, if I pass my exams and get an A (as this is what I need for further Maths at A Level) I will have to find you and give you a million pounds. You are the most helpful revision channel I have ever seen. Keep up the excellent work! :)

[@HEGARTYMATHS]

Really delighted to help Tom Atkins !!! I hold you to that 1 million pounds - jokes! But seriously best of luck and use the website www.hegartymaths.com/gcse to revise too as it has all the videos in easy to find place and exam answers. Keep up the hard work. Mr H

[@HEGARTYMATHS]

Tom Atkins Hiya Tom - thanks loads!!! Any chance you could spare 30 secs to vote for HegartyMaths in this Richard Branson competition which ends in a few days. Would mean a lot to me and HegartyMaths. www.virginmediabusiness.co.uk/pitch-to-rich/start-up/hegartymaths/ Thanks Mr H

[@katgrande9703]

This dude is literally my life saver.

[@julieelamparithi476]

Who is watching in 2019?

[@amandab9200]

2020

[@reddyfrench9792]

Anyone failing?

[@rubicorn4174]

most definitely

[@fiercelady8451]

It took me 4 minutes to understand this. Something, my teachers explained for months, still, I couldn't get it. Some people are natural born teachers, they chose simple words to explain and make Maths look so easy. Others teach just for the money and to rush and complete their syllabus. Thank you

[@songan6917]

this guy is the greatest math teacher of all time

[@andresmunchgallardo1383]

650k stressed students watched the video for the same reason...

[@miqdadarslan1358]

Best teacher possible. I never understand the sine and cos rules before watching your video. Tomorrow is my exam and definitely I will answer everything because of your teaching. Cheers

[@LolrusGaming]

Your videos are brilliant and really useful. I'm really using this video as a refresher, but your video on Circle Theorem was incredibly useful and taught me what my teachers never really managed to do. Thanks, I'm very grateful!

[@pbj3643]

I pay attention in class but my teachers were never able to help me and the rest of my class understand the topic. And to see that I was able to understand this formula in 20 mins says a lot 😬

[@cat5220]

OH MY GOD *THANK YOU!* I've been struggling with this for _ages_ and my maths teacher didn't even tell us about flipping the sine rule upside down or the different version of the cosine rule! Now I finally understand why I kept screwing up some of the past paper questions (I now know I needed the other version of the cosine rule not in the formula sheet). THANK YOU THANK YOU THANK YOU!!!! I'm definitely subscribing to you now!! :)

[@RazerGonth]

Thank you so much man,I cant express my gratitude.I have my test tommorow and I was scared the whole of last week how I was going to learn these 2 rules and apply them.You really are an amazing math teacher..

[@HEGARTYMATHS]

Check you calc say DEG at the top( degrees mode) also try using brackets so (20xsin(30))/sin(50)

[@silentlessons4221]

whoever you are i just want to let you know u r a good teacher. if only i hv been taught like this.

[@meghan2804]

This was great! Helped me out a lot. I had forgotten how to use the sine and cosine rule and watching this video, you explained it so well! Thanks!!

[@halfakiwi3250]

My semester exam is tomorrow and I forgot I had to memorize these. The way you explained when to use sine rule made perfect sense to me, thank youuuuu

[@alesiahenricytrigolos5121]

This is the best explanation I’ve ever gotten on the cosine rule and sine rule ever. Thanks, you’ve just saved my life 😌

[@x3DaDivax3]

you have no idea how helpful you've been to me! you're amazing!

[@HEGARTYMATHS]

I'll try my very best. I am a full time teacher and do these in my free time so it's very hard but I will keep trying to help out. Best of luck in your exams. Mr Hegarty

[@kingarthur7073]

Your students are sooo lucky to have you!! I don’t care my teacher and you are my math teacher now.

[@itsJenW]

Spent about 3-4 weeks in class on this and didn't understand it once, watched your 20 minute video and I can now answer any questions that come up on this topic. Thank you soooooooooo much :D

[@Hello312Kitty]

This is fantastic ! I'm going to be watching your videos for the next two months until I had my maths exam , this has made my understanding so much better :) thank you

[@user-tg1zf6ow4o]

Literally saving my life saw this in my maths test didn’t bother doing it looked too hard and stumbled across ur video I can now do it in my sleep Btw since watching ur videos my grades jumped by two which is a lot to me!

[@jordanharrison8325]

Thank you for the help, I am using your videos to help me pass my repeat first year maths exam in university - you make it so much easier than we were taught in lectures!

[@HEGARTYMATHS]

+Jordan Harrison You're very welcome. Keep an eye on the new website coming soon. Best wishes. Mr H :-)

[@madihatasnim6971]

although i am doing the 9-1 gcse.... and this is the old specification... it relly helps.... pfffttt who needs a tutor when you got hegarty maths?? guys pray for me to do well!!!

[@eddiehuggins8670]

Great tutorial. I'm doing HEFC's to go into Primary Education and this has really helped towards my final exam. I feel more confident now! Thank you!!!

[@madihatasnim6971]

i feel as though it is better to watch these videos, especially for those that prefer one-to-one .....me! also i really love this channel... doing my mocks this week .... and you are helping so much ! i hope i get a grade 7!!!

[@gaiacooper5]

GCSE maths exam tomorrow you are a life saver Mr Hegarty!

[@kotosqoposrly]

Question... when you do this operation: x = 10cms . sin60º/ sin 40º shouldn't you be cancelling sine that multiplies with sine that divides to get your answer in cms? Because if that is so then your answers are incorrect. Or I can't actually cancel these sines because sin60º is just a value not a scalar like cms?