# Ex 7.2, 7 - Chapter 7 Class 10 Coordinate Geometry

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Ex 7.2 , 7 Find the coordinates of a point A, where AB is the diameter of a circle whose centre is (2, 3) and B is (1, 4). Let the circle be as shown with centre C (2, 3) Let AB be the diameter of the circle Since AB is the diameter, Centre C must be the mid point of AB Let A(x, y) Since C is the mid point of AB x coordinate of C = ( 1 + 2)/2 y coordinate of C = ( 1 + 2)/2 Where x1 = x , y1 = y x2 = 1 , y2 = 4 Hence the coordinates of A(x , y) = A(3, 10)

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