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The co-ordinates of incentre of the tria...

The co-ordinates of incentre of the triangle whose vertices are given by `A(x_(1), y_(1)), B(x_(2), y_(2)), C(x_(3), y_(3))` is

A

`(ax_(1) + bx_(2) - cx_(3))/(a + b - c) , (ay_(1) + by_(2) - cy_(3))/(a + b - c)`

B

`(ax_(1) + bx_(2) + cx_(3))/(a - b + c) , (ay_(1) - by_(2) + cy_(3))/(a - b + c)`

C

`(-ax_(1) + bx_(2) + cx_(3))/(-a + b + c) , (-ay_(1) + by_(2) + cy_(3))/(-a + b + c)`

D

None of these

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The correct Answer is:
D
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