1. 5.3 – Solving Trigonometric Equations

2. In this section, you will learn to:
Use standard algebraic techniques to solve trigonometric equations
Solve trigonometric equations of quadratic type
Solve trigonometric equations involving multiple angles
Use inverse trigonometric functions to solve trigonometric equations

3. Two basic techniques for solving trigonometric equations are factoring and applying known identities.
a) Rewrite the equation with a single trigonometric function.
b) Remember only to factor after you have set the equation equal to zero.

4. Collect Like Terms/Take the Square Root:

5. Collect Like Terms/Take the Square Root:
(Solve for extraneous roots.)

6. Use identities to solve:

7. Use identities to solve:

9. Factor to solve:

10. Factor to solve:

11. Solving of Multiple Angles:

13. Homework
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