Negative Exponent Trigonometric Integrals

I've run into a couple of integrals I didn't know how to solve. I managed to find the solution to only one of them (**INTEGRAL 1/sin x = ****- ln |csc x + cot x| + C**)

I'd like help with the following, (kind of urgent - doing some tutoring and need to clear up stuff like this in case it comes up):

1. **INTEGRAL 1/sin****^2 (x)**

2. **INTEGRAL 1/cos^2 (x)**

I'm guessing the solutions for both are similar..and I'm assuming there may be a formula for integrals such as **sin^- n (x)** (or **cos**), but I'm mostly interested in the exponent **- 2**.

Thanks in advance to anyone who gives it a shot!