Establishing trig identities.?
The part I do not understand:
(2 secant theta tangent theta) = (2 sine theta) / (cosine^2 theta)
How do I get from the left side of the equation to the right?
If it helps, the original problem was:
(1-sine theta) / (1+sine theta) = (secant theta - tangent theta)^2
Like I said, the part that I am confused with is only a small piece of this puzzle. I understand MML for everything but the piece I am having a hard time with, so you do not have to waste your time on working out the whole thing for me. In fact, it will probably be less confusing if you can *only* tell me the answers to the small piece I am having trouble with.