1. Section 4.7 Inverse Trigonometric Functions

2. Helpful things to remember. If no horizontal line intersects the graph of a function more than once, the function has an inverse. If the point (a, b) is on the graph of f, then the point (b, a) is on the graph of the inverse function. The graph of the inverse is a reflection of the graph of f about the line y = x. The inverse is not the same as the reciprocal

4. The Inverse Sine Function

5. A Function and Its Inverse

6. To find the exact values of y = sin x, it is helpful to ask yourself, “The sine of what angle equals x.” Using your unit circle will help you find the answer. Make sure your answer falls within the restrictions Example

7. You try some

8. The Inverse Cosine Function

9. Example

10. You try some

11. The Inverse Tangent Function

12. Example

13. You try some

14. Using a Calculator to Evaluate Inverse Trigonometric Functions

15. Example

16. P. 563 #2 – 30 even