The locus of the mid points of the chords of the circle `x^2+y^2+4x-6y-12=0` which subtend an angle of `pi/3`radians at its circumference is:
(A) `(x-2)^2+(y+3)^2=6.25` (B) `(x+2)^2+(y-3)^2=6.25`
(C) `(x+2)^2+(y-3)^2=18.75` (D) `(x+2)^2+(y+3)^2=18.75`

The locus of the mid points of the chords of the circle x^(2)+y^(2)+4x-6y-12=0 which subtends an angle of (pi)/(3) radians at its centre is

The locus of the mid points of the chords of the circle x^(2)+y^(2)+4x-6y-12=0 which subtend an angle of (pi)/(3) radians at its circumference is: (A) (x-2)^(2)+(y+3)^(2)=6.25(B)(x+2)^(2)+(y-3)^(2)=6.75(D)(C)(x+2)^(2)+(y-3)^(2)=18.75(D)(x+2)^(2)+(y+3)^(2)=18.75

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find the locus of mid point of chords of circle x^(2)+y^(2)=25 which subtends right angle at origin

The equation of the locus of the mid-points of chords of the circle 4x^(2) + 4y^(2) -12x + 4y + 1 = 0 that substend an angle (2pi)/(3) at its centre, is