PrecalculusSuperchallengeAnalytic Trigonometry ShareAnalytic Trigonometry · Superchallenge problemFind the sum of all xxx in the open interval (0,π)(0,\pi)(0,π) that satisfy 8cosxcos2xcos4x=18\cos x\cos2x\cos4x=18cosxcos2xcos4x=1.Check Show answer Walk through it step by step Practice more like this Review this concept