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[" In "Delta ABC" ,the co-ordinates of t...

[" In "Delta ABC" ,the co-ordinates of the vertex "],[A" are "(4,-1)" and lines "x-y-1=0" and "],[2x-y=3" are internal bisectors of "],[" angles "B" and "C" .Then radius of "in" -circle of "],[Delta ABC" is "(k)/(sqrt(5))" where "k=]

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