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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

`0`

C

`(-1)/(2)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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