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The set of values of x for which ("tan" ...

The set of values of x for which `("tan" 3x- "tan" 2x)/(1+"tan" 3 x "tan" 2x) = 1`, is

A

`phi`

B

`{pi//4}`

C

`n pi + (pi//4)`

D

`2n pi + (pi//4)`

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The correct Answer is:
A
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