Trigonometry Problems [involves inverse functions]

So I am having a bit of trouble studying for my trig test coming up.... (Headbang)

for the section on inverse trig functions I am a bit confused with some questions

ex: sin[29arctanx)+arcos(2x)]

ex: cos[arctan3 - arcsin(-0.5)]

I understand the basics such as remembering the domains of the different functions and what not... but these questions seem to stump me.

Can you maybe solve one but with a thorough description.... =) (Clapping)(Clapping)(Clapping)(Bow)(Bow)(Bow)