Solve cos(x)=22\cos(x) = \frac{\sqrt{2}}{2}cos(x)=22 for xxx in the interval [0,2π)[0, 2\pi)[0,2π).
π/4,7π/4\pi/4, 7\pi/4π/4,7π/4
π/4,3π/4\pi/4, 3\pi/4π/4,3π/4
π/3,5π/3\pi/3, 5\pi/3π/3,5π/3
0,2π0, 2\pi0,2π