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Consider a triangle ABC with vertex `A(2,-4)`.The internal bisectors of the angle B and C are `x+y=2` and `x-3y= 6` respectively, Let the two bisector meet at I. If `(x_(1),y_(1))` and `(x_(2),y_(2))` are the coordinates of the point B and C respectively, the value of `(x_(1)x_(2)+y_(1)y_(2))` is equal toA. 4B. 5C. 6D. 8 |
| Answer» Correct Answer - A | |