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The general value of the real angle thet...

The general value of the real angle `theta`, which satisfies the equation, `(cos theta + i sin theta)(cos 2 theta + i sin 2 theta)….(cos n theta + i sin n theta) = 1` is given by, (assuming k is an integer)

A

`(2k pi)/(n+2)`

B

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

C

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

D

`(6k pi)/(n(n+1))`

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