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In a DeltaABC, the tangent of half the d...

In a `DeltaABC,` the tangent of half the difference of two angle is one-third the tangent of half the sum of the angle. Determine the ratio of the sides opposite to the angles.

A

`2:3`

B

`1:3`

C

`2:1`

D

`3:4`

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