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Prove that: (cos5A+cos3A+cosA)/(sin5A-...

Prove that:
`(cos5A+cos3A+cosA)/(sin5A-sin3A+sinA)=cotA`

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To prove that \[ \frac{\cos 5A + \cos 3A + \cos A}{\sin 5A - \sin 3A + \sin A} = \cot A, \] we will use trigonometric identities. ...
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