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Prove the Identity sin⁡xcsc⁡x−1+sin⁡xcsc⁡x+1=2tan⁡2x\frac { \sin x } { \csc x - 1 } + \frac { \sin x } { \csc x + 1 } = 2 \tan ^ { 2 } x

Question 169

Essay

Prove the identity.
- sin⁡xcsc⁡x−1+sin⁡xcsc⁡x+1=2tan⁡2x\frac { \sin x } { \csc x - 1 } + \frac { \sin x } { \csc x + 1 } = 2 \tan ^ { 2 } x

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