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If tan 2x =tan((x)/(2)), then the value ...

If `tan 2x =tan((x)/(2))`, then the value of x is

A

`(npi +- sqrt(n^(2)pi^(2) +16))/(4)`

B

`n pi/4`

C

`(npi +- sqrt(n^(2)pi^(2)-16))/4`

D

none of these

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The correct Answer is:
A
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