1.

\[{{(\sin \theta +i\,\cos \theta )}^{n}}\,\]is equal to [RPET 2001]

A. \[\cos n\theta +i\,\sin n\theta \]
B. \[\sin n\theta +i\,\cos n\theta \]
C. \[\cos n\left( \frac{\pi }{2}-\theta  \right)+i\,\sin n\left( \frac{\pi }{2}-\theta  \right)\]
D. None of these
Answer» D. None of these


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