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Prove that

Posted March 24th, 2008 by alpha
in

Prove that

$$\frac{sin\theta+cos\theta}{sin\theta-cos\theta}=\frac{tan\theta+1}{tan\theta-1}$$
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Answer

On March 24th, 2008 Structure says:
$$\frac{\sin\theta+\cos\theta}{\sin\theta-\cos\theta}=\frac{\frac{\sin\theta+\cos\theta}{\cos \theta}}{\frac{\sin\theta-\cos\theta}{\cos \theta}}=\frac{\tan\theta+1}{\tan\theta-1}$$

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