Two trigonometric identities given by: 3 tanx- tan3x &/ 1-3 tan?x tan 3x = cos4x = 8(cos*x - cos?x)+ 1 For each part, verify that the identity is correct by calculating the values of the left and right sides of the equation, substituting x-27°

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A: Given:          sinu=−35,  where 3π2&lt;u&lt;2π, and cosv=1517, where 0&lt;v&lt;π2.

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