Drawing a little diagram might help you.
sinA = 3/5 means that cosA = 4/5
cosB = 1/3 means that sinB =
using cos(A+B) = cosAcosB - sinAsinB, I got
It's a similar story with the others. Just use those values of sinA, sinB, cosA, cosB and keep substituting in the relevant double angle formulae.