A. x2+y2+8x+12y+27=0
B. x2+y2-12y+27=0
C. x2+y2-8x-12y+27=0
D. x2+y2-8x+12y+27=0
The equation to the pair of tangents drawn from (3, 2) to the circle x2+y2-6x+4y-2=0 is
The equation of one tangent to the circle with Centre(2,-1) from the origin is 3x + y = 0, then the equation of the other tangent through the origin is
The equation to the circle which is such that the lengths of the tangents to it from the points (1,0), (2,0) and (3,2)are 1,√7, √2, respectively is
The locus of the centre of the circles which touché both the circles x2+y2=a2 and x2+y2=4ax externally has the equation
The locus of the centre of the circle which cuts the circles x2+y2+4x-6y+9=0 and x2+y2-4x+6y+4=0 orthogonally is
A circle touches the x-axis and also touches the circle with centre at (0, 3) and radius 2. The locus of the centre of the circle is
The pole of the line ax+by+3a2+3b2=0 w.r.t to the circle x2+y2+2ax+2by-a2-b2=0 is
The circle with centre on the line 2x-2y+9=0 and cutting the circles x2+y2=4 orthogonally, passes through the fixed points
The lengths of the tangents from any point on the circle 15x2+15y2-48x+64y=0 to the two circles 5x2+5y2-24x+32y+75=0, 5x2+5y2-48x+64y+300=0 are in the ratio
The equation of the common chord of the two circles x2+y2+2x+3y+1=0, x2+y2+4x+3y+2=0 is