1. Reference Angles and Trigonometric Functions of Any Angle Accelerated Pre-Calculus

2. Reference angle: The acute angle formed by the terminal side of and the horizontal axis.

3. Ex 1) Determine the reference angle for each of the following angles.

4. You Try! 1.Determine the reference angle for each of the following angles.

5. Ex 1) (3,-4) is on the terminal side of an angle in standard position. Determine the exact values of the six trigonometric functions of the angle.

6. Ex 2) (-2,-1) is on the terminal side of an angle in standard position. Determine the exact values of the six trigonometric functions of the angle.

7. You Try! The given point lies on the terminal side of an angle in standard position. Determine the exact values of the six trigonometric functions of the angle. 1) (8,-6) 2) (4, 3)

8. Ex 3) Given, find the values of the other 5 trigonometric functions.

9. You Try: