1. The problem statement, all variables and given/known data Use power-reducing formulas to rewrite 152sin^2 x cos^2 x 2. Relevant equations sin^2θ= 1-cos2θ/ 2 and cos^2θ= 1+cos2θ/2 3. The attempt at a solution 152(1-cos2x/2)(1+cos2x/2), 152/4 (1^2 - cos^2 2x), 30(1-(1+cos4x/2), and I got 30-30+30cos4x/2 as the answer but the answer is supposed to be 19-19 cos4x. I have no idea how that can be?