csc2x−cot2x=1sin2x−cos2xsin2x=1−cos2xsin2x=sin2xsin2x=1\csc^2 x-\cot^2 x=\frac{1}{\sin^2 x}-\frac{\cos^2 x}{\sin^2 x}=\frac{1-\cos^2 x}{\sin^2 x}=\frac{\sin^2 x}{\sin^2 x}=1csc2x−cot2x=sin2x1−sin2xcos2x=sin2x1−cos2x=sin2xsin2x=1
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