Question

Can someone please help me?

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

csc^2 x - 1

Answer 1

you know csc^2(theta) = 1 + cot^2(theta)
so
csc^2 x - 1
= 1 + cot^2 x - 1
= cot^2 x +1-1
= cot^2 x

Answer 2

That's it? Wow. I'm an idiot.