Mon April 05, 2010 By: Vishnu Sasidharan

please answer my question sir

Expert Reply
Wed April 07, 2010

The chord will be hypotenuse of the right angled triangle with remaining two sides being the radius of the circle, which is 2.

The length of hypotenuse = (22+22) = 22

The length of 1/2 hypotenuse = 2

The length of perpendicular bisector, (22-2) = 2

Let the coordinates of the midpoint of the chord be (x,y).

The distance from origin,  (x2+y2) = length of perpendicular bisector =  2

Squaring both sides,

x2+y2 = 2,

Hence the locus is a circle with radius 2.




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