Director Circle of Parabola

Statement-I Director circle of hypebola (x^(2))/(a^(2))-(y^(2))/(b^(2))+1=0 is defined only when bgea . Statement-II Director circle of hyperbola (x^(2))/(25)-(y^(2))/(9)=1 is x^(2)+y^(2)=16 .

The director circle of the parabola (y-2)^(2)=16(x+7) touches the circle (x-1)^(2)+(y+1)^(2)=r^(2) then r is equal to

Equation Of Director Circle And Normal

Tangent and Director circle Problems

Line and parabola || Length OF chord || Tangent to parabola || Director circle || Normals to parabola

Pair Of Tangents|Director Circle|Chord Of Contact|Chord With A Given Middle Point|Properties Of Parabola|OMR

Director Circle and equation

Length of tangent | Director circle | Power of point

A circle x^(2)+y^(2)+4x-2sqrt(2)y+c=0 is the director circle of circle S_(1) and S_(2) ,is the director circle of circle S_(1), and so on.If the sum of radii of all these circles is 2, then find the value of c.

A circle S of radius 'a' is the director circle of another circle S_(1),S_(1) is the director circle of circle S_(2) and so on.If the sum of the radii of all these circle is 2, then the value of 'a' is 2+sqrt(2)(b)2-(1)/(sqrt(2))2-sqrt(2)(d)2+(1)/(sqrt(2))