Find all angles θ that are solutions of the equation. Express the solutions in degree measurement.

Question

2 cos (3θ) sin (2θ) − sin (2θ) = 0

Answer 1

2 cos 3θ sin 2θ - sin 2θ = 0

sin 2θ (2 cos 3θ - 1) = 0

Now use Zero Product Rule (Algebra 2) to solve for θ.