Trigonometry | Double Angle Formulae - Proof, Worked Examples and Trial Questions

Answers:
1. (i) 3Sin x - 4Sin³x
(ii) (3tanx - tan3x)/(1 - 3tan2x)
2. (i) 24/25
(ii) 7/25
(iii) 24/7

[@KennethOdongo-xd3vq]

this lesson was something else fore, i think it is a miracle to see this because i even watched it on a sunday
i can say this was my best trig lesson

[@ssekabirajohnson-eh5ys]

Ooh,wat a best explanation ❤❤...may GOD bless u sir

[@QueenKapalu]

I can't believe I was suffering in math 😂 thanks I have benefited

[@CalviNsiku]

An glad seeing this from my fellow African ❤️... it's always been azungu😂

[@GetrudeNakasaka-w3l]

Thx alot Mr. I was almost removing trig from my syllabus,🤕

[@OPGamer-mk3ch]

Well explained. I have understood well. 💯 💯

[@FidelGabrielle]

I love it!!
Well done

[@user-eo9rt3xy8m]

Really helpful I'm very grateful to you for this tutorials

[@noblelecturio5967]

Am humbled

[@jaramarz8913]

Thanks for helping me

[@anyashakhawan2106]

Thank you very much !!!

[@benyemmanuel511]

Thank you sir,
This was really helpful.

[@nannyongaresty9143]

Thx for the great explanation Denis

[@emaddddd]

Thank you sir

[@PhoebeWynessPhiri]

Very impressive

[@dennisivatswa]

thank you so much

[@enya3581]

thank you

[@FasikunAyomide]

The sin3A
Especially

[@NabukenyaIdah]

Good tr noble

[@henrynyondo1394]

Can you do an example of such expression of sin 150°

[@benedictkakuba4793]

thanks

[@arabieufornah383]

:-) great

[@benedictkakuba4793]

please upload differentiation of trigonometric functionz

[@noblelecturio5967]

Benedict, am sry for the Delay, but hopefully, before the end of this week, all shall be well.

[@reaganpaulgavin2621]

Is Sin2A =2(2/5)(4/5)
=0.96❤

[@NakiyanaJuliet-nx6og]

Kyekyo baba thank u but help us in paper two as well especially probability and statistics

[@KatusiimeJenipher-ug4ts]

Thanks so much tr lam begging you to help us with factor formular numbers coz we did but we don't if they are correct so correct ions sir

[@FasikunAyomide]

Please sir
I don really understand the assignment

[@noblelecturio5967]

Wic number in particular

[@mirigenius.kkey.uganda]

For tan i have failed

[@NabukenyaIdah]

Kyasanku