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.