1. 8-3 Trigonometry Part 2: Inverse Trigonometric Functions

2. Inverse Functions If you know the sine, cosine, or tangent ratio for an angle, you can use inverse functions to find the measure of the angle. The inverse functions are sin -1, cos -1, and tan -1.

3. Using Inverses What is m  X to the nearest degree? Make sure your calculator is in DEGREE mode!

4.  What is m  Y to the nearest degree?

5. Using Inverse Trigonometric Functions (not in book) Find the measure of the acute angle that the line makes with a horizontal line.

6.  Find the measure of the acute angle that the line makes with a horizontal line.