Practice problem
Simplify: cos2x+cos2xtan2x\cos^{2} x + \cos^{2}x \tan ^{2} xcos2x+cos2xtan2x
1
sin2x\sin^{2} xsin2x
−sin2x-\sin^{2} x−sin2x
cosx\cos xcosx
Type a concept, like “slope” or “photosynthesis”.
