Okay, this is all C3 (advanced maths, the English A-Level), and I need some help.

I need to prove that sin/cos + cos/sin = 2cosec2x

... any ideas?

I got this so far:

2cosec2x

2/sin2x

2/2sinxcosx (2's cancel out)

then from there, I think I'm stuck...

Help!

Luv me x x x