1) sin(n/4) cos(n/4) = sin^2(n/4)2) 2 sin(60°) - cot(30°) - cos(0°) = 2 * sqrt(3)/2 - sqrt(3) - 1 = sqrt(3) - sqrt(3) - 1 = -1
1) sin(n/4) cos(n/4) = sin^2(n/4)
2) 2 sin(60°) - cot(30°) - cos(0°) = 2 * sqrt(3)/2 - sqrt(3) - 1 = sqrt(3) - sqrt(3) - 1 = -1