Status: Waiting for your answers. Problem:If cos θ = -√2/2, use the unit circle and mark all of its solutions from 0 ≤ θ ≤ 2π.Solution: Check all solutions. 0 π/6 π/4 π/3 π/2 2π/3 3π/4 5π/6 π 7π/6 5π/4 4π/3 3π/2 5π/3 7π/4 11π/6 2π