Lesson: Solving Trigonometric Equations Using Trigonometric Identities Mathematics • 10th Grade

In this lesson, we will learn how to use Pythagorean trigonometric identities to solve trigonometric equations.

Lesson Plan

Students will be able to

solve a trigonometric equation over a given interval by applying one or more of the following trigonometric identities:
- reciprocal identities,
- periodic identities,
- Pythagorean identities,
- angle sum and difference identities,
- odd and even identities,
- cofunction identities,
solve real-world problems involving solving a trigonometric equation over a given interval by applying one or more trigonometric identities.

Q1:

Find the value of in degrees given where is an acute angle.

Q2:

Knowing that , find and .

Q3:

Knowing that , find and .