1. Objective: Finding solutions of trigonometric equations.
Warm up
Find the exact value using a half angle identity.
2. Find the exact value using the double angle identities. a. b.

2. Example 1
How many solutions does it have in the interval Hint: Look at its graph or unit circle.
How many solutions does it have?

4. Example 2
Solve for x.
Solutions in
All solutions.

5. Example 3 Solve for x. a. Solutions in . b. All solutions.

6. Example 4 Solve for x. a. Solutions in . b. All solutions.

7. Example 5 Find all solutions. 3 sinx - 2 = 5 sinx - 1

8. Assignment Section 5.5: Pg 636 #2-24 evens