Hi,

I am doing my best to understand my trig class, but I just cannot understand proving identities. I've spent the last three night searching the internet for videos and tutorials and still do not understand my own problems...

I was able to figure out a solution to one of them by looking at a solution to a previously posted problem, but I can't get it to work for any of my others.

I really would like to understand these!

Problem 1:

I started with LHS. I multiplied by

on both numerator and denominator and got:

over

And there I've lost it. Any hints? Am I even on the right track?