Suppose 0 ≤θ≤ π/2. Solve the equation: 2 cos(3θ) + cos(3θ

Last updated: 7/24/2022

Suppose 0 ≤θ≤ π/2. Solve the equation: 2 cos(3θ) + cos(3θ) - 2 = 0 for θ. Give your answer rounded to 2 places after the decimal point.