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Verify the identity. Show your work. cot2x + csc2x = 2csc2x - 1

User JBibbs
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\cot^2 x + \csc^2 x \implies \frac{\cos^2 x} {\sin^2 x} + \frac{1}{\sin^2 x} \implies \frac{\cos^2 x +1}{\sin^2 x} \implies \frac{1- \sin^2 x + 1}{\sin^2 x} \implies \frac{2 - \sin^2 x}{\sin^2 x} \implies \frac{2}{\sin^2 x} - \frac{\sin^2 x}{\sin^2 x} \implies 2 \csc^2 x - 1
User Artur Michajluk
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