Simplify: cos(2theta)\\cos(2\\theta)cos(2theta) in terms of sintheta\\sin\\thetasintheta.
1−2sin2theta1 - 2\\sin^2\\theta1−2sin2theta
2cos2theta−12\\cos^2\\theta - 12cos2theta−1
1−sin2theta1 - \\sin^2\\theta1−sin2theta
2sinthetacostheta2\\sin\\theta\\cos\\theta2sinthetacostheta