Question

Prove that....
{1+cotx-sec(x+90)}{1+cotx+sec(x+90)}=2cotx

I have tried solving this problem but am not getting the required answer.....

Answer 1

Try simplifying to sin and cos every time.

Answer 2

Where are you at on the problem? Are you stuck on a step or just completely lost?

Answer 3

Completely lost i guess.....
I am getting 1+2cotx+cot^2x-cosec^2x

Answer 4

Ya i got the answer.....