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sum(k = 1)^(13) (1)/("sin((pi)/(4) + ((k...

`sum_(k = 1)^(13) (1)/("sin((pi)/(4) + ((k-1)pi)/(6))sin ((pi)/(4) + (kpi)/(6)))` का मान है

A

`3 - sqrt(3)`

B

`2 (3 - sqrt(3))`

C

`2 (sqrt(3) - 1)`

D

`2 (2 + sqrt(3))`

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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