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!
I started with LHS. I multiplied by on both numerator and denominator and got:
And there I've lost it. Any hints? Am I even on the right track?
When you can't see ANYTHING else to do, an idea that can frequently be very useful (but can also lead to lots of work) is to change everything in the equation to and . For this problem, that would lead to . You can simplify this algebraically.