trigonometry

Question: $\frac{\sqrt{2}-\sin \alpha -\cos \alpha }{\sin \alpha -\cos \alpha }=$

1) $\sec \left( \frac{\alpha }{2}-\frac{\pi }{8} \right)$

2) $\cos \left( \frac{\pi }{8}-\frac{\alpha }{2} \right)$

3) $\tan \left( \frac{\alpha }{2}-\frac{\pi }{8} \right)$

4) $\cot \left( \frac{\alpha }{2}-\frac{\pi }{2} \right)$

Solution:

Explanation: No Solution

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