circle

Related Questions

• The line $ax+by+c=0$ is a normal to the circle ${{x}^{2}}+{{y}^{2}}={{r}^{2}}$ . The portion of the line $ax+by+c=0$ intercepted by this circle is of length

  ---

• The equation of the circle whose diameter lies on $2x+3y=3$ and $16x-y=4$ which passes through (4,6) is

  ---

• Length of the tangent drawn from any point on the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+{{c}_{1}}=0$ to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ is

  ---

• The equation of the circle through the points of intersection of ${{x}^{2}}+{{y}^{2}}-1=0$ , ${{x}^{2}}+{{y}^{2}}-2x-4y+1=0$ and touching the line $x+2y=0$ , is

  ---

• If OA and OB are the tangents from the origin to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ and C is the centre of the circle, the area of the quadrilateral $OACB$ is

  ---