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tan "" (pi)/(5) + 2 tan "" (2pi)/(5) + 4...

`tan "" (pi)/(5) + 2 tan "" (2pi)/(5) + 4 cot "" (4pi)/(5)=`

A

`cot.(pi)/(5)`

B

`cot.(2pi)/(5)`

C

`cot.(3pi)/(5)`

D

`cot.(4pi)/(5)`

Text Solution

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The correct Answer is:
A
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