### Home > PC > Chapter 6 > Lesson 6.3.2 > Problem 6-129

6-129.

Solve the following equations for

*θ*on [0, 2*π*]. Homework Help ✎sin 2

*θ*= 0sin

^{2}*θ*= cos^{2}*θ*

1. Substitute using the Double-Angle Formula.

2. Set each factor equal to 0 and solve.

1. Set the equation equal to 0.

2. Factor.

3. Set the factors equal to 0 and solve.

4. Note the domain.