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Find the value tan (pi/5)+2tan((2pi)/5)+...

Find the value `tan (pi/5)+2tan((2pi)/5)+4cot((4pi)/5).`

A

`cot ""pi/51`

B

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

C

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

D

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

Text Solution

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The correct Answer is:
A
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