Wow I did so bad in the multiple choice.
1) c
2) d
3) c
4) d
5) a
6) a [I had no idea if it was a or b, went with a at the end because I thought it looked more right..]
7) a
8) c [misread limits, I saw it as 0<theta<pi/2 ]
9) c [I read c as arccos(-x), so dumb..]
10) c
I'm...