Sitting here studying for a final exam this week, and I am SOO bad at identities. Maybe I just don't know them well enough.
Find the solutions to the following:
I got this far...or maybe it's all wrong, I duno.
* from a Pythagorean identity
* from the reciprocal of sec?
*cross multiplied and double angle formula? I feel this wasn't a good move, haha.
Thanks in advanced!