1.

If \[\sin \text{ }\left( \frac{\pi }{4}\cot \theta  \right)=\cos \text{ }\left( \frac{\pi }{4}\tan \theta  \right)\,\,,\] then \[\theta =\]  [Pb. CET 1988]

A. \[n\pi +\frac{\pi }{4}\]
B. \[2n\pi \pm \frac{\pi }{4}\]
C. \[n\pi -\frac{\pi }{4}\]
D. \[2n\pi \pm \frac{\pi }{6}\]
Answer» B. \[2n\pi \pm \frac{\pi }{4}\]


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