Prove
cot(theta)-tan(theta)=2cot(theta)
LS:
So far I have
cos(theta)/sin(theta)-sin(theta)/cos(theta)
=[cos^2(theta)-sin^2(theta)]/sin(theta)cos(theta)
=cos2(theta)/sin(theta)cos(theta)
I am stuck as to where to go now.
Can someone help me please?