trigonometry

Question: If n is any integer, then the general solution of the equation $\cos x-\sin x=\frac{1}{\sqrt{2}}$ is

1) $x=2n\pi -\frac{\pi }{12}$ or $x=2n\pi +\frac{7\pi }{12}$

2) $x=n\pi \pm \frac{\pi }{12}$

3) $x=2n\pi +\frac{\pi }{12}$ or $x=2n\pi -\frac{7\pi }{12}$

4) $x=n\pi +\frac{\pi }{12}$ or $x=n\pi -\frac{7\pi }{12}$

Solution:

Explanation: No Explanation

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