Pre-Calculus 12 Notes

By: Gen L.

Lesson 6: Quadratic Trig Equations

How to Solve:

The process for solving Quadratic Trig Equations is similar to solving Quadratics.

1. Set equation to zero
2. Simplify to linear factors
3. Set each factor to zero
4. Solve for

Example

Solve

Factoring Example

Solve

Simple Example

Solve

Since there's the , we consider all values.

Restrictions

A major restriction is that (also known as or )

Restriction Example

Solve

4. , since

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