This is a PowerPoint lesson that shows how to compute inverse trigonometric functions. It also shows how, and why, the domains of each are restricted.
If you want to have a Scavenger Hunt to review Inverse Trig Functions, give this one a try:
Inverse Trig Functions Scavenger Hunt
This addresses the second half of the CA Standard for Trigonometry 9.0: Students compute, by hand, the values of the trigonometric functions and the inverse trigonometric functions at various standard points.