cot "" (pi)/(20) cot "" (3pi)/(20) cot ...

`cot "" (pi)/(20) cot "" (3pi)/(20) cot "" (5pi)/(20) cot "" (7pi)/(20) cot "" (9pi)/(20)` का मान निम्नलिखित में से क्या होगा?

A

`-1`

B

`(1)/(2)`

C

0

D

1

Verified by Experts

The correct Answer is:

D

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