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Three forces P,Q,R act in the same sense along the sides BC,CA,AB of the traingle ABC.If their resultant passes through the orthocentre and the centroid then P÷sin2A.sin (B-C)= Q÷sin2BSin(C-A)=R÷sin2Csin(A-B) .

Three forces P,Q,R act in the same sense along the sides BC,CA,AB of the traingle ABC.If their resultant passes through the orthocentre and the centroid then 
P÷sin2A.sin (B-C)= Q÷sin2BSin(C-A)=R÷sin2Csin(A-B)
.

Grade:12th pass

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