Equation of any circle passing through the point(s) of intersection of circle `S=0` and line `L=0` is `S + kL = 0`. Let `P(x_1, y_1)` be a point outside the circle `x^2 + y^2 = a^2` and `PA and PB` be two tangents drawn to this circle from `P` touching the circle at `A and B`. On the basis of the above information : Equation of circumcircle of `DeltaPAB` is : (A) `x^2 + y^2 + xx_1 + yy_1 = 0` (B) `x^2 + y^2 + xx_1 - yy_1 = 0` (C) `x^2 + y^2 + xx_1 - yy_1 - a^2 = 0` (D) `x^2 + y^2 - xx_1 - yy_1 - a^2 = 0`

The equation of any circle passing through the points of intersection of the circle S=0 and the line L=0 is

Equation of any circle passing through the point(s) of intersection of circle S=0 and line L=0 is S + kL = 0 . Let P(x_1, y_1) be a point outside the circle x^2 + y^2 = a^2 and PA and PB be two tangents drawn to this circle from P touching the circle at A and B . On the basis of the above information : If P lies on the px + qy = r , then locus of circumcentre of DeltaPAB is : (A) 2px + 2qy = r (B) px+qy=r (C) px - qy = r (D) 2px - 2py = r

Equation of any circle passing through the point(s) of intersection of circle S=0 and line L=0 is S + kL = 0 . Let P(x_1, y_1) be a point outside the circle x^2 + y^2 = a^2 and PA and PB be two tangents drawn to this circle from P touching the circle at A and B . On the basis of the above information : The circle which has for its diameter the chord cut off on the line px+qy - 1 = 0 by the circle x^2 + y^2 = a^2 has centre (A) (p/(p^2 + q^2), (-q)/(p^2 + q^2) (B) (p/(p^2 + q^2), (q)/(p^2 + q^2) (C) (p/(p^2 + q^2), (q)/(p^2 + q^2) (D) none of these

Tangents drawn from (2, 0) to the circle x^2 + y^2 = 1 touch the circle at A and B Then.

The equation of the circle passing through the points of intersection of the circle x^(2)+y^(2)-2x+4y-20=0 , the line 4x-3y-10 =0 and the point (3, 1) is

The centre of a circle passing through the points (0,0),(1,0)and touching the circle x^2+y^2=9 is

Tangents drawn from the point P(1,8) to the circle x^(2)+y^(2)-6x-4y-11=0 touch the circle at points A and B. The equation of the cricumcircle of triangle PAB is

The centre of a circle passing through the points (0,0),(1,0) and touching the circle x^(2)+y^(2)=9 is