Question

prove that - cot2x- Tan X= cos3x/cosx sin2x​

Answer 1

Answer:

Answer 1

Step-by-step explanation:

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Answer 2

very easy

Step-by-step explanation:

$lhs \: \: = \: cot2x - tanx \\ = \frac{cos2x}{sin2x} - \frac{sinx}{cosx} \\ = \frac{cos2x.cosx - sin2x.sinx}{sin2x.cosx} \\ = \frac{cos(2x + x)}{sin2x.cosx} \\ = \frac{cos3x}{cosx.sin2x} = rhs$