Question

Verify the Pythagorean Identity step by step. 1+cot^2θ=csc^2θ

Answer 1

This is pretty simple.

If you have a sheet that tells you your identities then you should see that 
$1+cot^{2}=csc^{2}$
Just change
$1+cot^{2}$ to $csc^{2}$
and get 
$csc^{2}=csc^{2}$