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If (cos theta + i sin theta)(cos 2 theta...

If `(cos theta + i sin theta)(cos 2 theta +i sin 2 theta ) …(cos n theta + i sin n theta)=1` then the value of `theta` is (m are integers)-

A

`(m pi)/(n (n+1))`

B

`4m pi`

C

`(2m pi)/(n (n-1))`

D

`(4m pi)/(n (n+1))`

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The correct Answer is:
D
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CHHAYA PUBLICATION-MCQ's-QUESTION PAPER 6
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