Simplify Trig Expressions | Reduction formulae and special angles | Trigonometry

Solving for trig expressions without the use of a calculator involving reduction formulae

[@patiencethulare9168]

Let's pay off our sir by not skipping ads please ❤

[@footballinsights2003]

Nah

[@t.morelife]

That is so PROFOUND

[@MlungisiNkosi]

Thank you so much

[@Yourfavcutie17]

I've become more confident approaching math and physics questions because of you❤ Thank you sir, I am very grateful for you🙏

[@SyreLikeAFire]

i love productively procrastinating with ur videos

[@nokukhanyadlanagalala6864]

I love the contradiction in "productive" and "procrastinating"❤️😂😂😂

[@PhindileKhumalo-ct9vn]

I haven't done trigonometry since 2006 which was my matric yes and I've recently started studying, I thank God for people like you who simplify maths equations for us. I'm writing in a few minutes and must say, your explanation lessened my anxiety for this morning. God bless you a thousand times. Thank you, thank you, thank you.

[@MlungisiNkosi]

You’re welcome ☺️

[@ebrahiimmmmm]

thanks for the help, you're the reason im bagging A's for physics and chemistry. Your math videos are great too its good revision and its cool to see your thought process which helps to see how i should approach a question

[@muneiwamuravha258]

Great video, thank you so much.🌼
But isnt the answer -3/4?

[@Ashley2004-v6t]

Yes I also got that

[@yellow6657]

@@Ashley2004-v6t same

[@thaabi]

Same

[@its.koenaaa]

I thought I was the problem 😭I think he forgot that we were multiplying and kept the denominator the same - 3/4 is right

[@anelisamkhulisi8828]

Yes I also got the same

[@rebeccacochrane8913]

“i know that you wrote the paper 1 very well” - oh sir, only if you knew

[@koolthings4267]

I was like who is he referring to😭🤣🤣

[@asandaasanda2889]

😂😂he doesn't know

[@MlungisiNkosi]

Askies guys

[@thatorosemary2769]

Thank you sir.... 🎉🎉🎉🎉You are the best

[@MlungisiNkosi]

You’re welcome

[@lesegolenyanyabedi3516]

Thanks for the help ❤

[@snakhokonkeswazi8866]

You're the best 🥺

[@MlungisiNkosi]

Thank you 😊

[@user-kf4vb7jd4q]

why is the cos(540-360) not negative, isnt it supposed to be negative. like to be -cos180

[@AsandaMthimkulu-eh1wr]

No because cos in the 4th quadrant is positive we can identify it because it's 360

[@thandiisabella4417]

Thank you so Much sir

[@user-et6go2hd5l]

Sir how do I know that this is the number I need to substitute..and also why do change tan into sin÷cos..and why don't we use values of special angles..

[@MlungisiNkosi]

It’s trial and error considering the restriction you’re given. You try 0, +/-1, +/-2 and so on till you find all solutions that fit the restriction

[@nokwazimbanjwa8137]

100k subs❤️‍🔥 thank for being consistent and for your help

[@AishaAli-ns5jf]

Would it be incorrect to change cos27 to it's co-ratio and instead have sin( 90 - 27) which would give sin63 then it would cancel out

[@xivikovikzo1033]

The answer is positive 3/4 because the negatives will cancel,please go back and check

[@serogolemogole2685]

That's not correct, the answer-3/4 is the correct answer

[@user-or4hy3oy1l]

thanks sir

[@tumelotsotetsi2788]

Thank sir you make it easy to understand 🙏 🙌

[@sugar4177]

Please can you do examable questions on Euclidean geometry ty btw

[@Khanothegreat]

Sir for cos210 I used cos (270-60) and found the co ratio of cos. Is that still correct?.

[@michelleshambare9330]

Yes, that is still correct you still get the same answer

[@Khanothegreat]

@@michelleshambare9330 Thank you, I really appreciate the help💫.

[@michelleshambare9330]

@@Khanothegreat no problemo 🌻

[@patiencethulare9168]

No , I think when reducting you use horizontal angles ,hence we always use 180 n 360

[@dailydope369]

dankie baba🙌🏽

[@patiencethulare9168]

Congratulations on 100k subbies sir , can you please do trig functions questions

[@jomar1270]

Answer should be -3/4

[@MlungisiNkosi]

Awesome

[@ayandalihlebuthelezi6869]

Thank you sir.

[@justfootball8438]

This was in my grade 10 paper last year

[@MlungisiNkosi]

Great 😊

[@kamogelolamola5235]

Thank you sir

[@ntokozomoetshu]

Sir mina um thinking kuthi this thing yama Special angle ngiyenze nge Calculator. Are they going to catch me?

[@nelsonsello3505]

THANKS SIR

[@anastaciamadikane850]

Danko sir ❤

[@Phetogo03]

thnqs

[@calvinmlambo]

Good day Sir isn't the answer -3/4

[@oratilwesihe652]

Good question. I'm also confused coz I thought when multiplying fractions we should say √3×√3=-3 then multiply 2×2 to get 4? Or maybe we do that only when the denominators are not the same?

[@epicmadness4836]

Sir can I get a 70% in math if I didn't do well on math paper 1

[@sugar4177]

Yebo if you get 210 marks on paper 2 👍🏽good luck bru

[@LeloZondi_crazyasschild]

@@sugar4177 😹😹😭😭😭.

[@epicmadness4836]

@@sugar4177 bro paper is out of 150🤷‍♂️

[@Hakhakhisigida]

@@sugar4177 psych😭💀😂

[@yellow6657]

@@epicmadness4836 if you do well enough ,you can ❤
Go for it

[@lisitenzikamusaro914]

💐

[@mbalimbatha6427]

Sir ngiyadideka when it comes to choosing roots. How do I know when to use the x root or the y?

[@onalozibaya2967]

Sorry to ask my comment is not about this section
So whenever I'm doing a question in Euclidean geometry I get correct answers but my way of doing it is totally different from the ones on the memo should I be worried?

[@MahlatseM]

Same...I think when they aren't in their order the answer is automatically wrong😭

[@snazzy8903]

as long as your method is mathematically correct you'll get your marks. There's more than 1 way of doing a question

[@stembilekhuzwayo7022]

Do you perhaps have grade 10 videos?

[@sikhiphaangela]

Thank you sir