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The value of sum(k=1) ^(10)( sin "" ( 2k...

The value of `sum_(k=1) ^(10)( sin "" ( 2kpi )/( 11) + i cos "" ( 2kpi )/(11))` is `:`

A

-1

B

-i

C

i

D

1

Text Solution

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The correct Answer is:
B
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