A. 75 sq unit
B. 145 sq. unit
C. 150 sq. unit
D. 50sq. unit
If (1, a), (b, 2) are conjugate points with respect to the circle x<sup>2</sup> + y<sup>2</sup> = 25, then<br>4a + 2b is equal to :
The angle between the tangents drawn from (0,0) to the circle x2+y2+4x-6y+4=0 is
If the circle x<sup>2</sup> + y<sup>2</sup> + 2x + 3y + 1 = 0 cuts another circle x<sup>2</sup>+y<sup>2</sup> + 4x + 3y + 2 = 0 in A and B, then the equation of the circle with AB as a diameter is :<br>
The extremities of a diameter of a circle have coordinates (-4, -3) and (2, -1). The length of the segment cut off by the circle on y-axis is
The number of common tangents to the two circles x2+y2-x=0, x2+y2+x=0 is
The centres of similitude of the circles x2+y2-2x-6y+9=0, x2+y2=1 is
The inverse point of (1, 2) with respect to the circle x2+y2-4x-6y+9=0 is
If the polars of points on the circle x2+y2= a2 w.r.t the circle x2+y2= b2 touch the circle x2+y2= c2, then a, b, c are in
If the equation of the circle which cuts orthogonally the circle x2+y2-4x+2y-7=0 and having centre at (2, 3) is x2+y2+2ax+2by+c=0 then the ascending order of a, b, c is
The parametric equation of the circle x2+y2+x+√3y=0 is