Question

Please help!
Prove: sin theta-sine theta*cos^2 theta=sin^3theta

Answer 1

Do you know your Trig Identities?

Answer 2

@phi @ganeshie8

Answer 3

1) factor the left side out of sine theta
2) divide both sides by sine theta
3) use `sin²x+cos²x=1`

Answer 4

No

Answer 5

Let me know if you need more help.

Answer 6

What do you mean by no ?

Answer 7

How do I factor trig functions?

Answer 8

I didn't mean no

Answer 9

I really need help with this one

Answer 10

sinθ- sinθcos²θ=sin³θ
factor the left side out of sinθ,
sinθ(1- cos²θ)=sin³θ
divide both sides by sinθ,
1- cos²θ=sin³θ
add cos²θ to both sides


tell me what you get...

Answer 11

1-coa^4 theta=sin^3 theta + coa^2 theta

Answer 12

I mean cos instead of coa