Evaluate.

Question

1. sin^-1(-1/2)
2. cos^-1[(-root 3)/2]
3. arctan[(root3)/3]
4. cos(arccos2/3)
5. arcsin(sin 2pi)
6. sin(arccos 1)

Answer 1

I will be happy to critique your thinking or work.

Answer 2

I got these values as my answers:
1. -pi/6
2. 5pi/6
3. pi/6
4. 2/3
5. 2pi
6. 0