I came across another in worksheet that I can't seem to figure out. I've been using cos^2x + sin^2x = 1 to help me out, except its only succeeded in confusing me more. I'd like to chalk it up to this not being equal, but really, its that fact I can't simplify anything for the life of me!

Here goes:

(1-cosx)/sinx = sinx/(1 + cosx)

Thank you!