Question

sinθcos^2 θ+sin^3=sinθ

Only allowed to work on one side

Answer 1

work the left then

Answer 2

how should i go about doing this?

Answer 3

factor out a sin

Answer 4

sinθcos^2 θ + sin^3 θ = sin θ

sinθ (cos^2 θ + sin^2 θ) = sin θ

Answer 5

what does: cos^2 + sin^2 equal as an identity?

Answer 6

im actually not sure, I completely don't understand trig identities

Answer 7

1?

Answer 8

1 is correct soo..

sin θ (1) = sin θ

sin θ = sin θ

is prolly the easiest way to do it; another way is to change cos^2

Answer 9

if cos^2 + sin^2 = 1; then cos^2 = 1-sin^2 right?

Answer 10

sin cos^2 +sin^3 = sin

sin (1 - sin^2) +sin^3 = sin

sin - sin^3 +sin^3 = sin

sin = sin

Answer 11

oh alright, you really helped a lot! thanks!

Answer 12

youre welcome, trig is like 98% memorizing stuff that youll never really use :)