Practice problem
Simplify: sin2x1−sin2x\dfrac {\sin^{2} x} {1-\sin^{2} x}1−sin2xsin2x
111
tan2x\tan^{2}xtan2x
sin2x\sin^{2}xsin2x
cos2x\cos^{2} xcos2x
Type a concept, like “slope” or “photosynthesis”.
