### Home > PC3 > Chapter 8 > Lesson 8.3.5 > Problem8-150

8-150.

Solve each of the following equations for $0\leθ<2\pi$.   Homework Help ✎

1. $\sin(2θ)=0$

1. Substitute using the Double-Angle Formula.
2. Set each factor equal to $0$ and solve.

1. $\sin^2(θ)=\cos^2(θ)$

1. Set the equation equal to $0$.
2. Factor.
3. Set the factors equal to $0$ and solve.
4. Note the domain.