CircleHard

Question

The locus of the mid points of the chords of the circle x2 + y2 - ax - by = 0 which subtend a right angle at is -

Options

A.ax + by = 0   
B.ax + by = a2 + b2
C.x2 + y2 - ax - by + = 0
D.x2 + y2 - ax - by - = 0

Solution

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