A circle `x^2 +y^2 + 4x-2sqrt2 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 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 x^(2)+y^(2)+4x-2sqrt(2)y+c=0 is the director circle of the circle S_(1) and S_(1) is the director circle of circle S_(2), and so on.If the sum of radii of all these circles is 2 ,then the value of c is k sqrt(2), where the value of k is

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))

The equation of director circle to the circle x^(2) + y^(2) = 8 is

The line 2x-3y+1=0 is tangent to a circle S=0 at (1,1). If the radius of the circle is sqrt(13). Find theequation of the circle S.

For the four circles M, N, O and P, following four equations are given : Circle M : x^2 + y^2=1 Circle N : x^2 + y^2– 2x=0 Circle 0 : x^2 + y^2 - 2x - 2y +1=0 Circle P : x^2 + y^2 – 2y=0 If the centre of circle M is joined with centre of the circle N, further centre of circle N is joined with centre of the circle O, centre of circle O is joined with the centre of circle P and lastly, centre of circle P is joined with centre of circle M, then these lines form the sides of a :

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4 The radius of the circle is:

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is :