CIRCLES

Co-ords. of centre of circle which bisects the circumferences of the circles :
x²+y² = 1 ; x²+y²+2x-3=0; x²+y²+2y-3 = 0
is :

A) (-1,-1)
B) (3,3)
C) (-2,-2)
D) (2,2)

Ans : (-2,-2)

1 Answers

HINT--IF THE CIRCLE S₁=0 BISECTS THE CIRCUMFERENCE OF THE CIRCLE S₂=0 THEN COMMON CHORD WILL BE THE DIAMETER OF S₂=0

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