circle

Related Questions

• If the circles ${{x}^{2}}+{{y}^{2}}=4,{{x}^{2}}+{{y}^{2}}-10x+\lambda =0$ touch externally, then $\lambda $ is equal to

  ---

• The point of contact of the given circles ${{x}^{2}}+{{y}^{2}}-6x-6y+10=0$ and ${{x}^{2}}+{{y}^{2}}=2$ , is

  ---

• The equation of the circle which passes through the point of intersection of circles ${{x}^{2}}+{{y}^{2}}-8x-2y+7=0$ and ${{x}^{2}}+{{y}^{2}}-4x+10y+8=0$ and having its centre on$y$ -axis, will be

  ---

• From three non- collinear points we can draw

  ---

• If O is the origin and OP, OQ are tangents to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ , the circumcentre of the triangle $OPQ$ is

  ---