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Verify the Identity tan⁡2x(1+cos⁡2x)=1−cos⁡2x\tan ^ { 2 } x ( 1 + \cos 2 x ) = 1 - \cos 2 x

Question 71

Essay

Verify the identity.
- tan⁡2x(1+cos⁡2x)=1−cos⁡2x\tan ^ { 2 } x ( 1 + \cos 2 x ) = 1 - \cos 2 x

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