1. Solving Trig Equations
Notes: 7-5
Solving Trig Equations
Principal values determine specific solutions rather than an infinite number of solutions.

2. There is only one set of positive and negative values for the given quadrants.

3. There is only one set of positive and negative values for the given quadrants.

4. Example 1 Solve for the principal value of x:

5. *Since the given ratio is negative, choose the
*Principal values for sinx: between -90° and 90°.
*Since the given ratio is negative, choose the
appropriate value from Quadrant IV.

6. Example 2 *Since the given ratio is negative, choose the
appropriate angles from the 2 quadrants where
sinx has negative value.

7. 7

8. Notes: 7-4 8

9. Hint for p.459 #26 Relate given trig equation to then factor and use zero product property to solve.

10. Check evens on p.459