The locus of the mid-point of the chords of the circle `x^2 + y^2 - 4x-6y-3 = 0` which subtend a right angle at the point(h, k), is

The locus of the midpoint of the chord of the circle x^2 + y^2 =4 which subtends a right angle at the origin is?

Find the locus of the midpoint of the chords of the circle x^(2)+y^(2)=a^(2) which subtend a right angle at the point (c,0) .

The locus of the mid-points of the chords of the circles x^(2)+y^(2)-2x-4y-11=0 which subtends an angle of 60 at centre is

The locus of the mid-point of the chords of the circle x^(2)+y^(2)=4 which subtends a right angle at the origin is x+y=2 2.x^(2)+y^(2)=1x^(2)+y^(2)=2x+y=1