5 sin x 4 cos x 0 July 8, 2019 16 32 64 128 2 cos 2 x 5 sin x 4 0 Suppose sin x )= 4 5 and cos x 0 Integrate sin 4 x * cos 5 x dx from 0 to pi 2 ∫ _( 0 π 2 sin 4 x cos 5 x dx Sin 5 Sin(4x) in terms of sin(x)