Question

Evaluate https://wca.sooschools.com/media/g_alg02_ccss_2013/11/img_alg02u11c02q08d_12.gif
The value of this expression is

Answer 1

@amistre64

Answer 2

@BOOKER23

Answer 3

@hartnn

Answer 4

Well, you can factor out a sin^2 to get:
(sin^2(1-cos^2))^-1
1-cos^2 = sin^2
(sin^2)(sin^2)^-1
(sin^4)^-1
sin^-4
Either that is your answer, or csc^4.
If you want explanation, feel free to ask.