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[" In "/ABC," the coordinates of the ver...

[" In "/_ABC," the coordinates of the vertex "A" are "(4,-1)" and lines "x-y-1=0" and "2x-y=3" are the internal "],[" bisecters of angles "B" and "C" .Then,the radius of the incircle of triangle "ABC" is "],[[" (a) "(5)/(6)," (b) "(3)/(6)," (c) "6," (b) "7]]

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