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If alpha = cos((8pi)/11)+i sin ((8pi)/11...

If `alpha = cos((8pi)/11)+i sin ((8pi)/11)` then `Re(alpha + alpha^2+alpha^3+alpha^4+alpha^5)` is

A

`1/2`

B

`-1/2`

C

0

D

None of these

Text Solution

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The correct Answer is:
B
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