So my homework is to solve these trig identities. I'm in grade 11, so we have only begun by learning the Pythagorean Identity, the Quotient identity and its inverse, as well as the 3 (or 6... depending how you look at it) that include sin=1/csc, cos=1/sec, and tan=1/cot (and the inverses for the last 3). So Our task was to solve thse trig identities. I've scanned my work in for 5 that I cannot seem to solve. Mind you guys, I know there's a couple in there that will end up having the same method of solutions, so if you find a couple like that in the 5, just do the one that seems easiest, please. I'm sure I could then figure out the other one. But I really do need some tips in the right direction on these. Also mind you, I have attempted a few steps, as you can see, but I may have gone about solving these in the improper method, so don't take the steps that I have included as correct.

Thanks in advance!

http://i160.photobucket.com/albums/t...identities.jpg (On this page, I need help on (e) AND (f) .

http://i160.photobucket.com/albums/t...dentities2.jpg