Grade 12 Trigonometry Lesson 1| Reduction Formula

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[@MmathapeloMolomo]

Hey sir,I think the other way of dealing with reduction formula is by using a calculator Let's take Sin(180-theta) You go to the calculator & press sin(180-1),the answer will be 0,01745... & That answer is + so it means sin(180-theta) will be + sin Theta can be represented by any number

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🕯May the exams be this doable and clear to see

[@onikwa1885]

I have been watching your videos for so long I was waiting for "that's how the cooking crumbles" at the end😭thank you sir

[@TanjiroKamado-w4f]

Thank you for the lesson it's extremely helpful but you confused clockwise with anti-clockwise. In the end I got what you were trying to say though.

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Since term 1 I've been finding trigonometry hard. But after this lesson I have hope and I'm pretty sure that I'll do well

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Summary of past question papers 😩this really helped

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[@MlungisiNkosi]

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[@scoopspy3065]

I appreciate all your videos sir, you are a lifesaver thank you so much. Sir you made a mistake on the last question the final answer is " -tan@ "

[@MlungisiNkosi]

Thank you 😊

[@totally_toyalee]

No, I don't think it's a mistake

[@ReentseTshoma-yy6ev]

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Thank you so much😊 this was easy to understand 🙏

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Thank you 😊

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Thanks for the videos ..............

[@EtwtdgteFgfgdte]

Hall Jose Rodriguez Kenneth Davis Deborah

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greatly explained sir😀

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May God bless you 🙏🏽❤️

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Thank you so much can you please add more analytical geometry videos

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Will do

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Thank you for the lessons...

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This was very helpful, thank you!

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Thank you 😊

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Can't wait for this😋🔥

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More is on the way

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Well explained 👏

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Siyabonga bafo ❤❤

[@saraasare699]

Please I watched the same introduction of reduction formulae from one of your colleagues on KZbin and he Said negative does not affects cos theta(- theta) but when you're making angles from the Cartesian plane it changes.And you have something like sin (-theta+180) ,for you to solve this you will first of all, factor negative out i.e (-(-theta +180)) before you solve it's like I'm concerned about that please.His name on KZbin is MR.X MATHEMATICS and please search for his introduction because I'm a student and I'm confused please thank you from Ghana, Africa

[@MlungisiNkosi]

Welcome to all the way in Ghana. We are so happy to be with you. Please choose a method that is more suitable to your understanding... Either way, end up at the same place.

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all the best sir

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Good work keep on helping us sir

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You’re welcome..

[@mathandoesthando3582]

Can you please do the hall trigometry chapter , grade 12 💔 🙂 I'm seeing progress in you videos

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We will keep doing the best we can

[@Dance-fg2vd]

Hi. Can u pls explain why on the first example it's 360 - (180- ○) but the last example it's 360 + (○ - 360)? Thanks

[@MlungisiNkosi]

We use +/- 360 to correct anything that’s unfamiliar to get it back to what we are used to

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Thank you so much

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lifesaver💃🏽💃🏽💃🏽

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Thank you 😊

[@lulamakeletso894]

can I ask sir on the last question as u leaved that tan u shouldnt continue it n be sin|cos?

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Good work meneer 👌👌

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Thank you…

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Thank you❤

[@lumkaqhineka5598]

Enjoyed the lesson

[@MlungisiNkosi]

My pleasure

[@magadikhanyisile2081]

Please do Euclidean geometry 🥺🙏

[@MlungisiNkosi]

Little by little, we will get there…

[@optimisticbeing2740]

at 27:43 , may you please explain in a different way why we have 180 + theta and not 180 - theta?

[@MlungisiNkosi]

360-(180-@) = 180 + @

[@optimisticbeing2740]

@@MlungisiNkosi thank you :)

[@johnnyruan5326]

Can someone explain how clockwise is going in the wrong direction?

[@PreciousMarumo-q3x]

Can someone remind me the special angles please

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thank you sir... please can you do ratios and area of a triangle 😂🤟

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Thank you sir

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[@Trizer_za]

Sir, you mixed up clockwise and anti-clockwise at the beginning of the lesson.

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Askies

[@maboki2171]

Thanks bro

[@kingtobhi]

3:40 Isn’t that anti-clockwise? I’ve consulted my clock and I’m certain this is anti-clockwise

[@MlungisiNkosi]

Did I say clockwise? 😂 I’m sorry

[@kingtobhi]

@@MlungisiNkosi it’s not that big of a deal senor. As long as the concept is grasped that’s all that matter. You really saved my butt with these lessons

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Life savours

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[@skhundlazi4347]

My Bro, please tell me which computer program you used for teaching in this way??

[@MlungisiNkosi]

I use Note

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Sir please do a vertical Projectile series'😭

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: thanks you ..youmake maths beeasy

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[@DoctorTholaphi]

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[@georgewashy5340]

sir how do we reduct cos(90-2x) ?

[@MlungisiNkosi]

It becomes sin 2x = 2sinxcosx

[@georgewashy5340]

@@MlungisiNkosi THANKS A LOT SIR

[@MlungisiNkosi]

@@georgewashy5340 my pleasure

[@Vivianschannel234]

Is this playlist relevant to grade 11

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It is

[@matomemasehela8765]

Isn't it suppose to be - cos× -tan ...

[@MlungisiNkosi]

Is that what you got?

[@matomemasehela8765]

@@MlungisiNkosi no I made a mistake with simplifying...am sorry for that misunderstanding

[@ok.yellowboy]

sir i think you made a mistake its clockwise=negative anti-clockwise=positive

[@MlungisiNkosi]

You’re right… What did I say? 🫣

[@owamhlumelo3978]

thank you, i also picked up that mistake

[@MlungisiNkosi]

@@owamhlumelo3978 please forgive your uncle

[@khadijaamjad9504]

Plz do Euclidean 😢

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There already is 😃

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what about grade 11 please

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The content is relevant for both Grades. What are you specifically looking for?

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Cartesian plane

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​@@MlungisiNkosi Cartesian plane

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Uyandoda bhut

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My pleasure 😊