Grade 12 Trigonometry Lesson 5| Compound angle identities

Proving identities using the compound angle formulae made easy. Enjoy this lesson!
#mlungisinkosi #trigonometry

[@jetrothamsanqa1532]

I just got sin(90) = 1😄 sir
This is my first time proven these identity correct 😄
I can't wait to keep on improving my Math & Science with you sir 😃
The way your explain things it's easy to understand

[@MlungisiNkosi]

Wow!!! This is incredible… Keep going!!!

[@nomfundoasiphe5629]

With my exam being tommorow ,this was a last minute save thank you so much Malume👌

[@carlavanrooyen340]

my answer is sin90 = 1. is that correct?

[@MlungisiNkosi]

Awesome 👏🏾

[@bolanlelaleye8401]

Yes its correct

[@LindiweMpanza]

How did you get 1
Show me plz

[@_qhama_mtwetwe]

@@LindiweMpanza put sin(90) in your calculator and your going to get 1

[@lumkaqhineka5598]

I got 1 as the answer
This was a good lesson thanks

[@MlungisiNkosi]

You’re so welcome… Thank you

[@aflvme]

same

[@beatalabercensie545]

You're exceptional. Thank you so much sir Mlu 🙏🙏

[@MlungisiNkosi]

My pleasure

[@Mmimphow_]

I just did the question and my answer was cos(101-49) i.will make sure I get it right and thank you for your help I'm the newest member of the family and I'm already understanding alot🙃

[@MlungisiNkosi]

Welcome to the family 🥳🥳🥳🥳🥳🥳

[@manandigameon]

Thank You So Much Sir, You don't even make Maths Sound Easy! You literally Make It Easy 🥺❤️‼️, I Wish I discovered this Channel While I was still in High School 😭, But then It's fine you're still helping after High School 😜❤️😁

[@ThusoTshiping-iw9ex]

Ka nnete

[@thobekandlela7556]

Quick question. I know this was recorded a while back but can you please do corrections from previous video in the next video.
2. Regarding the one we have to do alone here, do we have to follow the rule of : what you do on the left hand side you do on the right hand side.
Thank you very much for your content by the way, it’s very helpful 🥺❤️

[@MlungisiNkosi]

I’m not quite sure I follow

[@iamtasha.4837]

@@MlungisiNkosi I think she referring to the question that you left us with before the end of lesson 4.

[@alungilengcameva6445]

@Thobeka Ndlela I think she meant to suggest that if you leave a question at the end of a video please do corrections of that question in the next video if not so I suggest it myself🙏🏾
Thank you for your content much appreciated and helpful @Mlungisi Nkosi

[@MichaelMakamu-sy4rs]

=sin(8°+82°)
=sin(90°)
=1
That's the answer I got

[@owamidlamuka922]

Wena mfoka Nkosi siyabonga mfwethu.🙌🏽...

[@phumelelemtambo2452]

😭 😭 Yho you are a plug indeed wish I discovered your channel earlier

[@MlungisiNkosi]

Wow… Thank you.

[@prudencemukwevho8083]

I'm finishing off too, I'm now getting there. Thank you Uncle.

[@goodnessmabaso2315]

I got sin(90) =1 answer sir
It was a good lesson 👍🙏sir

[@MlungisiNkosi]

You’re most welcome 🤗 😃

[@Thuto_638]

Sir , about the 2nd last question . The last one you did with us . I got sin(60) which still led to root 3 over a 2 . Is that still correct ? I said
Cos(90-11) . Cos(360-49) +Sin(90+11) . Sin49
Then got Sin11. Cos49 + Cos11 . Sin49
Which gave me Sin(11+49)
then Sin60 being equal to root 3 /2 . Correct me if I'm incorrect pls .

[@MapasekaMolebatsi]

Sir how did you get over 4 on the first one?

[@simbamarudza7735]

I got cos(0°) which is =1

[@MlungisiNkosi]

The stuff of genius 🤞🏾

[@rotondwaangel62]

Sir for number 2
Why didn't we use cos20 and cos40

[@jessicahlungwani2349]

Wow thank you so much sir

[@MlungisiNkosi]

You’re welcome

[@TseboMotsa]

Here are my last 3 steps
= sin(82 + 8)
= sin 90
= 1
Months later, and this lesson is still relevant. Thank you bra Mlu, you're a true epidemy of black excellence📚⚠️🔥

[@MlungisiNkosi]

Thank you

[@mthalimbali8899]

Sin on the 2nd last question. I got the same answer but from a different root. I changed cos to be sin and changed 79 to be (90-11) ,is that still fine?

[@MlungisiNkosi]

That’s perfect 🤩

[@mendrewmabuza]

The answer is 1.
Thank you so much for the lesson.

[@MlungisiNkosi]

You’re welcome

[@matsoabolimojalefa9607]

its sin 90 sir so when i convert it it gives me 1

[@MlungisiNkosi]

Perfect

[@czeenfootballtv1005]

Thank you so much bhut Mlu..🙏

[@sphesihleshabalala2390]

I got sin90 which means 1 thank you for a lesson you a good teacher i do understand when you are explaining thank you so much sir

[@nokonotwane775]

Thank you very much sir, got sin90 just forgot to convert to 1

[@MlungisiNkosi]

That’s awesome

[@mogaukadishenkadimeng5089]

I got sin90
And I'm newest member of the family

[@MlungisiNkosi]

Welcome 🥳🥳🥳🥳🥳🥳🥳🥳
You’ve got it quite right

[@PhathumudauPhathu]

My answer cos74 s it correct?

[@Fearless13289]

Sir when are u going to teach physical science on stream

[@MlungisiNkosi]

Please feast on the thousands of videos available on our playlist already

[@Fearless13289]

@@MlungisiNkosi Alright sir

[@RobinHood-nt7hu]

Thank You Sir

[@MlungisiNkosi]

Most welcome

[@wisemzimkhulu683]

1 is the answer I got.

[@czeenfootballtv1005]

Sin 90=1
Sin (82+8)

[@kamogelomosetlo8580]

Thank you sir , sir please consider doing a mst meeting where we can interact with you please

[@lareinejen8815]

Sin(90)
=1

[@MlungisiNkosi]

The stuff of genius 😊

[@ian_sambo04]

@@MlungisiNkosi i just got the same answer too😊

[@MlungisiNkosi]

@@ian_sambo04 awesome

[@jabulanimatingane8493]

sir,i got sin90 of which is giving me 1....thank you

[@MlungisiNkosi]

Well done

[@Thuto_638]

And for the last one i got Cos(0) which is 1

[@franklin_morningstar]

At 11:00 instead of taking out a negative, would it be possible to just multiple by - 1 so the signs change?

[@ngcebopromisse]

MY question too

[@kekelletsomoeti8358]

Thanks

[@MlungisiNkosi]

You’re welcome

[@salathielmoyo5246]

I got cos(0°) is it correct

[@nonhlanhlamnisi1442]

Me too . Cos (0) =1
And the final answer is 1 as malume approved

[@MulweliRamarada]

Sin90

[@lucianmsimango5920]

My answer was sin 90 which is equal to 1.

[@MlungisiNkosi]

Awesome

[@KabeloKabelowthoka]

cos (8-8)=cos0 =1

[@witneyzulu8205]

I got 1 as a final answer

[@MlungisiNkosi]

Awesome

[@lulutime53780]

Sin(90) which is 1
That what I got as my answer

[@MlungisiNkosi]

Genius

[@ntetsanemonyepao6069]

Got it Sin(90)=1

[@MlungisiNkosi]

Awesome 🤗❤️

[@ZamyNgxongo]

I got 1 as an answer

[@lisandwandwa790]

I dont understand how to solve this question

[@MlungisiNkosi]

You can always join our live online sessions for extra help. Email [e-mail]

[@nqobilenqoorh621]

Sin(90)=1 That What I Got

[@MlungisiNkosi]

Perfect

[@gracemaria1696]

1 is the answer

[@MlungisiNkosi]

Great ☺️

[@thabangmakua2242]

Also got sin 90=1

[@MlungisiNkosi]

Awesome 😎

[@dineoselepe3481]

1 sir

[@MlungisiNkosi]

Correct ✅

[@ntokozomazibuko6195]

sin 90 = 1

[@mildredagu8028]

My answer is sin 90= 1

[@MlungisiNkosi]

Excellent 😃

[@nqubekolive7792]

Got 1

[@MlungisiNkosi]

Awesome

[@nerrisapmamba6994]

My Answer Was 1

[@MlungisiNkosi]

Your answer is correct

[@itumelengjay]

My final answer is 2/2 = 1

[@itumelengjay]

Thank you sir🫂

[@MlungisiNkosi]

This is awesome

[@jessicahlungwani2349]

My final answer is 1

[@MlungisiNkosi]

Awesome 👏🏾

[@sunnyboymkhasibe9995]

it was sin(82+8) which is sin90= 1

[@MlungisiNkosi]

Beautiful 🤩

[@WYGEE_WES]

1 is the final answer 😅

[@MlungisiNkosi]

Awesome!!

[@AlakhiweAkhile]

I got 1 not zero

[@AlakhiweAkhile]

My answer is zero

[@omphulusamadia]

Sin(90)=1

[@MlungisiNkosi]

Perfect

[@clairepurdy7238]

Sin(82+8)
Sin(90)
=1

[@MlungisiNkosi]

How dope is that?