In ΔABC, the coordinates of vertex A is (4,−1), and the lines x−y−1=0 and 2x−y=3 are the internal bisectors of the angles B and C respectively. If the radius of the incircle of the triangle ABC is r then the value of [r] is (where [.] denotes the greater integer function)

In ΔABC, the coordinates of vertex A is (4,−1), and the lines x−y

1.	In ΔABC, the coordinates of vertex A is (4,−1), and the lines x−y−1=0 and 2x−y=3 are the internal bisectors of the angles B and C respectively. If the radius of the incircle of the triangle ABC is r then the value of [r] is (where [.] denotes the greater integer function)
Answer» In $Δ A B C$ , the coordinates of vertex $A$ is $(4, - 1)$ , and the lines $x - y - 1 = 0$ and $2 x - y = 3$ are the internal bisectors of the angles $B$ and $C$ respectively. If the radius of the incircle of the triangle $A B C$ is $r$ then the value of [r] is (where [.] denotes the greater integer function)