The amplitude of \[\sin \frac{\pi }{5}+i\,\left( 1-\cos \frac{\pi }{5} \right)\] [Karnataka CET 2003]

The amplitude of \[\sin \frac{\pi }{5}+i\,\left( 1-\cos \frac{\pi }{5}

1.	The amplitude of \[\sin \frac{\pi }{5}+i\,\left( 1-\cos \frac{\pi }{5} \right)\] [Karnataka CET 2003]
A.	\[\pi /5\]
B.	\[2\pi /5\]
C.	\[\pi /10\]
D.	\[\pi /15\]
Answer» D. \[\pi /15\]

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The amplitude of \[\sin \frac{\pi }{5}+i\,\left( 1-\cos \frac{\pi }{5} \right)\] [Karnataka CET 2003]

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