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The value of (3 tan 5^@-tan^3 5^@)/(1-3t...

The value of `(3 tan 5^@-tan^3 5^@)/(1-3tan^2 5^@)` is :-

A

`2+sqrt3`

B

`2-sqrt3`

C

`sqrt2+1`

D

`sqrt2-1`

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