Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.)

Question

(tan²(θ) − 9)(2 cos(θ) + 1) = 0

thanks

Answer 1

By the Zero Product Rule

tan² θ = 9 or cos θ = -0.5