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-xdvq]

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

[OPGamer-mkch]

Well explained. I have understood well. 💯 💯

[ssekabirajohnson-ehys]

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-wl]

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

[eortxym]

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

[benyemmanuel]

Thank you sir,
This was really helpful.

[henrynyondo]

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

[benedictkakuba]

please upload differentiation of trigonometric functionz

[NakiyanaJuliet-nxog]

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

[KatusiimeJenipher-ugts]

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

[reaganpaulgavin]

Is Sin2A =2(2/5)(4/5)
=0.96❤

[FasikunAyomide]

Please sir
I don really understand the assignment