A) \[n\pi +\frac{\pi }{4}\]
B) \[\frac{n\pi }{2}+\frac{\pi }{8}\]
C) \[\frac{n\pi }{2}\pm \frac{\pi }{8}\]
D) None of these
Correct Answer: B
Solution :
On simplification, it reduces to \[\cos 2\theta =\sin 2\theta \] \[\Rightarrow \] \[\tan 2\theta =\tan \frac{\pi }{4}\Rightarrow 2\theta =n\pi +\frac{\pi }{4}\Rightarrow \theta =\frac{n\pi }{2}+\frac{\pi }{8}\].
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