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In a DeltaABC, angleB=(pi)/(3) and angl...

In a `DeltaABC, angleB=(pi)/(3) and angleC=(pi)/(4)` let D divide BC internally in the ratio `1:3`, then ` (sin(angleBAD))/(sin(angleCAD))` is equal to :

A

`1/sqrt6`

B

`1/3`

C

`1/3`

D

`sqrt(2/3)`

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