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In A B C , the coordinates of the verte...

In ` A B C` , the coordinates of the vertex `A` are `(4,-1)` , and lines `x-y-1=0` and `2x-y=3` are the internal bisectors of angles `Ba n dC` . Then, the radius of the encircle of triangle `A B C` is `4/(sqrt(5))` (b) `3/(sqrt(5))` (c) `6/(sqrt(5))` (d) `7/(sqrt(5))`

A

`5/(sqrt(5))`

B

`3/(sqrt(5))`

C

`6/(sqrt(5))`

D

`7/(sqrt(5))`

Text Solution

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The correct Answer is:
C
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