CPM Homework Help : PC Problem 6-129

Solve the following equations for θ on [0, 2π]. Homework Help ✎
1. sin 2θ = 0
2. sin² θ = cos² θ

Hint (a):

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

Hint (b):

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