1.

\[\frac{3+2i\sin \theta }{1-2i\sin \theta }\] will be purely imaginary, if \[\theta =\] [IIT 1976; Pb. CET 2003]

A. \[2n\pi \pm \frac{\pi }{3}\]
B.   \[n\pi +\frac{\pi }{3}\]
C. \[n\pi \pm \frac{\pi }{3}\]
D. None of these [Where \[n\] is an integer]
Answer» D. None of these [Where \[n\] is an integer]


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