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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[@user-bj3bl3yo9z]

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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For me I just wanna say thank u .u really make a difference 💜

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thank you so much for all your videos you make this so simple .and for physics you make it very easy too .thank you so much i just pray that i doo really well this year as it is my last year in school.thank God i found your page

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[@kwaneleeee3313]

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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started watching your videos this in jan when i began matric its october now left with less than 3 weeks to write final but i"m confident because siphethe wena malume

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Can't wait for this😋🔥

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This was very helpful, thank you!

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More is on the way

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Summary of past question papers 😩this really helped

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[@juniormogaleadi5717]

Thank you so much😊 this was easy to understand 🙏

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Thank you 😊

[@MbasaMlenzana]

greatly explained sir😀

[@saraasare699]

Please I watched the same introduction of reduction formulae from one of your colleagues on TH-cam 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 TH-cam 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.

[@kholisantsobothi6334]

Good work keep on helping us sir

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

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all the best sir

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

[@MlungisiNkosi]

Will do

[@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

[@mathandoesthando3582]

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

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[@johnnyruan5326]

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

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Enjoyed the lesson

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My pleasure

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

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Just keep watching

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Can someone remind me the special angles please

[@skhundlazi4347]

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

[@MlungisiNkosi]

I use Note

[@magadikhanyisile2081]

Please do Euclidean geometry 🥺🙏

[@MlungisiNkosi]

Little by little, we will get there…

[@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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Sir please do a vertical Projectile series'😭

[@EASYTEACHARCH]

Well explained 👏

[@MlungisiNkosi]

Thank you 🙂

[@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 :)

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Thanks bro

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Life savours

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Thankyou ❤

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You're welcome 😊

[@donatella9434]

Thank you sir

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My pleasure 😇

[@georgewashy5340]

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

[@MlungisiNkosi]

It becomes sin 2x = 2sinxcosx

[@georgewashy5340]

@@MlungisiNkosi THANKS A LOT SIR

[@MlungisiNkosi]

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: thanks you ..youmake maths beeasy

[@MlungisiNkosi]

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[@Trizer_za]

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

[@MlungisiNkosi]

Askies

[@Thatofunstudio679]

Is this playlist relevant to grade 11

[@MlungisiNkosi]

It is

[@khadijaamjad9504]

Plz do Euclidean 😢

[@MlungisiNkosi]

There already is 😃

[@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

[@gessieomankoy4237]

what about grade 11 please

[@MlungisiNkosi]

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

[@gessieomankoy4237]

Cartesian plane

[@gessieomankoy4237]

​@@MlungisiNkosi Cartesian plane

[@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

[@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

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sizophasa la

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Phasani please

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Uyandoda bhut

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My pleasure 😊