A) Parallel
B) Perpendicular
C) Neither parallel, nor perpendicular
D) Intersecting, but not fully perpendicular
Correct Answer: B
Solution :
We know that the radical axis of two circles is the locus of a point which moves in such a way that the lengths of the tangents drawn from it to the two circles are equal. It is a line perpendicular to the line joining the centres of two circles.
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