Cosine Rule Finding a Side - VividMath.com

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If this guy can perfectly explain in 6 minutes what my teacher can barely explain in 75 minutes, then math teachers are doing it wrong.

[@fredrickosakwe7074]

True

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exactly, this shit made no sense until i discovered this guy

[@VividMath]

Many Thanks for your warm feedback!!!!!

[@TE-xo9bi]

This video is amazing, never been a maths person but this is some teaching I can respect, this is the only video on the subject that has substantially helped me, good onya!

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Thank you very much sir you are an awesome teacher. I hope you were my teacher; I would have gotten 100% in any quiz.

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فعلا جميل

[@mariamhaque3164]

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I'm actually in love with Vividmaths! These video's are amazing! You've made everything so simple and easy! I was able to teach everyone in my class the way you've explained it and helped the majority of my class get A/A*'s in our mocks! Love and thanks Vividmaths fan :)

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more teachers like this are needed

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Your videos are the best tutorial material I have come across ever. When do you start your website? I can't wait. Your lessons are priceless.

[@Crazzy-5173]

If you want you can plug into a calculator if it does bidmas Squareroot overall then (17*+20*)-(2(17)(20))cos(48)

[@klargeworden]

What an actual legend. I've never understood anything better :)

[@nadaabdalla7411]

this man is a super hero. I barely understood this from my tutor but he explains really well. I wonder how he knows all the answers without using a calculator!! Super smart, lol.

[@KHsora34]

great help! studying for physics exam and this was just fantastic!

[@armorvestrus4119]

Very well explained, but it did take a minute to catch on to all the parts.

[@boost.Threshold]

Thank you sir, that really helped a lot 🔥

[@arianzidaneofficial]

I paused it at the beginning, solved it and skipped to 6:03. Omg it's so satisfying to understand something

[@Pandorarl]

I would still like a reason why the second part of the formula is as it is. My thought process is that since the first part is the pythagorean theorem of a right hand triangle then the second part must be the difference of the length if the right angle triangle would be less degrees. The cosine we can use to find the influence a vector on an angle has on another, but I'm still not sure about where exactly where the multiplication of the two other sides come in (2bc)

[@vascobishop3359]

So good and clear. Many thanks

[@warraichabdullah611]

This guy is good

[@ambrose5728]

Abdullah Warraich ikr

[@mariamhaque3164]

Yes

[@mariamhaque3164]

Yes yes

[@mariamhaque3164]

You are what

[@thabanimlalazi486]

This helped so much thanks !!!!

[@adamskead8859]

Thank you a lot for this, I'm gonna rub this in my teachers face and say I've done the impossible

[@paulpayton6854]

I love how this guy refuses to use the phrase "lower-case" but instead "little {insert letter here}"

[@ashi7910]

You're very helpful thank you so much

[@ambrose5728]

I subbed you, you helped me out so much

[@passaniabarnes1608]

I followed along with this and I think u got it right

[@passaniabarnes1608]

* I got it right

[@lisapruijs5419]

Thank you! Very helpful

[@mightguy5548]

sir, are you alive? if so, I wanna thank you for helping my students as they're noobs and your explanation helped them alot. #ehub #amaderdarakichuhobena #spider_kuddus

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Big Fan ❤ 👍👍👍 #spider_kuddus #amaderdarakichuhobena #ehub

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Raid from spider kuddus #spider_kuddus 🛑🛑

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Can we collab ? #spider_kuddus ki jai ho ✊✊✊

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We will break the algorithm #spider_kuddus

[@jessicahaufiku3089]

I just want to save the semester ☺️❤️.

[@stephanieupright2324]

Can we get practice questions?

[@brownie321]

Thanks Man This was really helpful :D

[@TheBalrajBrar]

Thanks , its really helpful...

[@sluss6844]

thanks sigma this helped me lots

[@lorrainechinyere]

U explain perfectly was abt to give up on ds topic

[@colethamansueti-qd6wc]

Is it must to be given the value of b and c and the angle

[@finleyglass777]

What a legend

[@stevehope9143]

Great video!

[@Jackil2307]

Thank you very much sir . U really helped Alot

[@constant_asmr]

This was very helpful, thanks☺

[@abu_staif]

Hi how is 2020?

[@VividMath]

Glad it was helpful!

[@stanpriceayers5344]

very helpful thank you

[@_User__MiNa_Bruh]

I was literally 5 years old when this video was released!!!!!!!

[@sukhmeetlayal4361]

It was supposed to be 435

[@brian8529]

Your way better that my Asian tutor and she is asian

[@Risulfur]

Why 15.3 and not 15? In the beggining of the problem there were given 3 different numbers and all of them had only 2 significant numbers (20, 17, 48)

[@Pandorarl]

Because this is a maths problem so we assume presicion. Where as if it was a physics question you would absolutely be right

[@MATTHEWGUMBEZE]

THANK YOU

[@javonramjohn8747]

All i can say is thank you

[@greatdane1948]

Thanks!

[@MasonMichaluk]

Thank you so much,

[@dustysane1591]

thankyou sir ...😘

[@CalviNsiku]

Why didn't he the cos48 🙄🙄

[@erangamadushanka8459]

thanks sir.

[@annesneha8583]

Thanks a lot ❤️

[@theophonchana5025]

cos (48°)

[@invokergaming4991]

i think its gonna be -435 instead of -455

[@PristineReviews]

same whats going on here

[@PristineReviews]

so incase you were still looking for the solution, its that our calculators were set to RADIAN mode. just have to change it to DEGREE mode

[@Cameron-tl2ty]

appreciated

[@jackdaw9418]

No it came out as 15.3 for me

[@khalisafauzi8303]

thanks thats help meee

[@VividMath]

Glad to know

[@phrincebernardino7060]

Thank you 👌 -2018

[@leenyellow]

much love

[@adityakewalramani1374]

but very helpful nice

[@funitoo]

I watch like 20 videos by now and spend a couple of hours googling and still NOBODY has said what "cos" is. Is it something that everyone just know and I have a genetic mutation which misses it out from my brain?

[@camilaschica6650]

Cos means Cosine :)

[@Paul-ob2hy]

Tad Ka cos means cosine, think of this as a scientific ratio you apply to numbers of degrees.

[@Risulfur]

Cos alpha = Xalpha, look up trigonometry

[@mariamhaque3164]

Who are you and why you like?

[@adityakewalramani1374]

he was not calculating anything he was looking on the right and the answer was on the right each time

[@biso5159]

Better than my fucking teacher

[@squeekycheese]

put your decimal point lower

[@mrsmurferson384]

To think they would have found an easier way to do this in the last 11 years😢

[@Thunder_Monarch]

Eyy thx

[@Jason-wy7wx]

680 x 48 is not 455 please someone help me he said "680xcos48" help i have spent 1 hour just rewatching his videos to see if he tells us something

[@african_samural.official]

cos is a button on your scientific calculator to work out the that style of triangle

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[@Conquerorbrown]

focus on the procedure and use your calculator to do the rest. make sure your calculator is programmed to degrees and not radians. He may have rounded off the value.

[@mariamhaque3164]

Hello I like mathematics

[@mariamhaque3164]

I also like this

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I love you. I love you.

[@rossgrief6451]

👏

[@abir4556]

Hknv

[@guywaitingforsilksong]

how do school math teachers continue to overcomplicate things while these YT teachers explain stuff in minutes!?

[@arcosska6353]

you guys notice all mathematics teacher is not as good

[@stangy904]

this guy dose not know that two negatives make a positive. the answer is 33.5305554806cm

[@NoobGodGamings]

THANK YOU

[@nothing-jq8bq]

How are you now

[@gideonmendem]

thanks sir