Verify the following identity. \(\frac{sin\ 4x + sin\ 6x}{sin\ 4x - sin\ 6x} = - tan\ 5x\ cot\ x...

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Verify the following identity.
\(\frac{sin\ 4x + sin\ 6x}{sin\ 4x - sin\ 6x} = - tan\ 5x\ cot\ x...
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