What is the first step. Explain please.

Question

Which expression is equivalent to cos^2x + cot^2x + sin2^x?

a) 2csc^2x
b) tan^2x
c) cot^2x
d) csc^2x

cos^2x + cot^2x + sin2^x

Answer 1

1 + cot^2 x
1 + cos^2 x/sin^2 x

sin^2 x/sin^2 x + cos^2 x/sin^2 x

1/sin^2 x

csc^2 x d)

Answer 2

How did you get 1 + cot^2 x?

Answer 3

cos^2 x + sin^2 x = 1
That should be part of your soul !

Answer 4

Thank you~ T.T my school is fast paced, I am trying to keep up...