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`A B C`is an isosceles triangle. If the coordinates of the base are `B(1,3)`and `C(-2,7)`, the coordinates of vertex `A`can be`(1,6)`(b) `(-1/2,5)``(5/6,6)`(d) none of theseA. (1,6)B. (1/2 , 5)C. (5/6 , 6)D. none of these |
Answer» Clearly , vertex P lies on the perpendicular bisector of QR whose equation is `y - 5 = (3)/(4) (x + (1)/(2)) or , 6x - 8y + 43 = 0` Clearly , (5/6, 6) satisfies this equation . ltbRgt Hence , the vertex P is (5/6 , 6). |
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