A. x2+y2+2x-4y-47=0
B. x2+y2=49
C. x2+y2-2x+2y-47=0
D. x2+y2=17
The centre of the circle x2+y2-4x-2y-4=0 is
If the two circles (x-2)2+(y-3)2=r2and x2+y2-10x+2y+17=0 intersect in two distrinct points then
The limiting points of coaxal system x2+y2+11x-5y-2+λ(x-y-1)=0 is
The equation of the circle passing through the point of intersection of the circles x2+y2-3x-6y+8=0, x2+y2-2x-4y+4=0 and touching the line x+2v=5 is
If the two circle x2+y2+2gx+c=0 and x2+y2-2fy-c=0 have equal radius then locus of (g, f) is
The point (3, -4) lies on both the circles x2+y2-2x+8y+13=0 and x2+y2-4x+6+11=0. Then the angle between the circles is
The nearest point on the circle x2+y2-6x-4y-12=0 from (-5, 4) is
The equation of the tangents to a circle x2+y2-4x-6y-12=0 and parallel to 4x-3y=1 are
The equation of the chord of the circle x2+y2=25 with (1, -1) as the midpoint is
The equations to the direct common tangents to the circles x2+y2+22x-4y-100=0, x2+y2-22x+4y+100=0is