K Keri M New member May 5, 2010 #1 1. Solve sin 2x = cos x given that 0 </= x < 2 pi 2. Show: 1 - 3 cos x - 4 cos ^2 x / sin ^2 x = 1 - 4 cos x / 1 - cos x
1. Solve sin 2x = cos x given that 0 </= x < 2 pi 2. Show: 1 - 3 cos x - 4 cos ^2 x / sin ^2 x = 1 - 4 cos x / 1 - cos x
