1.

I is the incentre of DeltaABC. Forces barP,barQ,barR acting along IA,IB,IC respectively are in equilibrium. Then abs(barP) : abs(barQ) : abs(barR)=

Answer»

cos A : cos B : cos C
`cosA/2 : cos B/2 : cos C/2`
`SINA/2 : sinB/2 : sinC/2`
`sinA : sinB : sinC`

ANSWER :B


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