1. 9-10a Simple Trigonometric Equations
Rita Korsunsky

2. Example 1 Example 2 1. Cosine is positive in what quadrant?
2. What is the
reference angle?
3. Are there any
restrictions?
General Solutions
No.
Example 2
1. Sine is negative
in what quadrant?
2. What is the
reference angle?
3. Are there any
restrictions?
Yes.
General Solutions
Specific Solutions

3. Example 3 Example 4 1. Cosine is negative in what quadrants?
2. What is the reference angle?
Example 4
1. Cosine is negative in what quadrants?
2. What is the reference angle?

4. II, IV
III, IV
II, III
III, IV

6. Example 5

7. Example 6

8. Example 7
I, II I II

9. Example 8
I, II I II

10. Example 9
II, III II
III