Your answers are close. For the rotations, I have several comments:
1. Most important: your angles need to be subscripted. That is, the problem statement has and so that's what you'd better have.
2. It's considered better practice to use non-italicized function names: is better than
3. I would highly recommend ALWAYS putting parentheses around function arguments. I've been burned on that one before, and so rather than write in a way that people can understand, I would rather try to write in a way that no one can misunderstand. So I'd recommend writing trig functions this way: etc.