6 cos 2x sin x 5 0 July 8, 2019 16 32 64 128 6 cos 2x 5 sin x 2 0 6 cos^2x+sin x-5=0 6cos^2 x + 5sin x - 2 = 0 5 sin^2+6cos x-6=0 6cos^2 x + 5sin x - 7 = 0
