here's a hint for the first problem ...
second problem ...
the left side will simplify to ...
then use the Pythagorean identity
I am stuck on these 2 problems. Any help would be appriciated. Please show me the steps so that I can see where I am missing it.
Find the exact value:
sin[arcsin 1/3 + arcsin(-2/5)]
second problem: verify as an identity:
2tanx secx cscx = 2+2tan^2x
Thanx for the help and just maybe I can help someone else someday.