A. a, b, c
B. b, c, a
C. b, a, c
D. a, c, b
The parametric equation of the circle x2+y2+x+√3y=0 is
How many circles can be drawn each touching all the three lines x+y=1, x+1=y, 7x-y=6
Equation of the circle passing through A(1, 2), B(5, 2) so that the angle substended by AB at points on the circle is π/4 is
Match the following
The number of points where the circle x2+y2-4x-4y=1 cuts the sides of the rectangle x=2 , x=5 , y=-1 and y=5 is
If 5x-12y+10=0 and 12y-5x+16=0 are two tangents to a circle,then the radius of the circle is
The tangents at (3, 4), (4, -3) to the circle x2+y2=25 are
The equation of the circle cutting orthogonally circles x2+y2+2x+8=0, x2+y2-8x+8=0 and which touches the line x-y+4=0 is
If the circle S=x2+y2-16=0 intersects another circle S’=0 of radius 5 in such a manner that the common chord is of maximum length and has a slope equal to 3/4 then the centre of S’=0 is
The locus of the midpoints of chords of the circle x2+y2=25 which touch the circle (x-2)2+(y-5)2=289 is