Question

Factor the algebraic expression below in terms of a single trigonometric function.

cos x - sin 2x - 1

Answer 1

it's sin^2x sorry

Answer 2

sin^2x + cos^2x = 1 , so sin^2x = 1 - cos^2x
1 = sin^2x + cos^2x

cosx + 1- cos^2x - 1

cosx - cos^2x

Answer 3

factor out : cosx (1 - cosx)

Answer 4

Thanks! I understand now, thanks to you

Answer 5

Thanks! I understand now, thanks to you