[" Locus of the point of intersection of "],[" perpendicular tangents drawn one to each of "],[" the circles "x^(2)+y^(2)=8,x^(2)+y^(2)=12" is "]

Locus of the point of intersection of perpendicular tangents drawn one to each of the circles x^(2)+y^(2)=8 and x^(2)+y^(2)=12 is

Locus of the point of intersection of perpendicular tangents drawn one of each of the circles x^(2)+y^(2)=8 and x^(2)+y^(2)=12 is

Locus of the points of intersection of perpendicular tangents drawn one to each of the circles x^(2)+y^(2)-4x+6y-37=0, x^(2)+y^(2)-4x+6y-20=0 is

Locus of the points of intersection of perpendicular tangents drawn one to each of the circles x^(2)+y^(2)-4x+6y-37=0, x^(2)+y^(2)-4x+6y-37=0, x^(2)+y^(2)-4x+6y-20=0 is

The locus of point of intersection of perpendicular tangents drawn to x^(2) = 4ay is

The locus of the point of intersection of perpendicular tangents drawn to each of circles x^(2)+y^(2)=16 and x^(2)+y^(2)=9 is a circle whose diameter is

Locus of the point of intersection of perpendicular tangents to the circle x^(2)+y^(2)=10 is

Locus of the point of intersection of perpendicular tangents to the circle x^(2)+y^(2)=16 is