Question

please answer this question​

Answer 1

Answer:

Multiplying Numerator And Denominator by

$\sin^{2} ( \alpha ) \cos^{2} ( \alpha )$

Equation Becomes :

$\frac{\cos^{2} ( \alpha ) \: + \: \sin^{2} ( \alpha ) }{ \cos^{2} ( \alpha ) \: - \: \sin^{2} ( \alpha ) }$

Dividing Numerator And Denominator by

$\cos^{2} ( \alpha )$

We Get:

$\frac{1\: + \: \tan^{2} ( \alpha ) }{ 1 \: - \: \tan^{2} ( \alpha ) }$

Hence Proved...

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