circle

Related Questions

• If two circles ${{(x-1)}^{2}}+{{(y-3)}^{2}}={{r}^{2}}$ and ${{x}^{2}}+{{y}^{2}}-8x+2y+8=0$ intersect in two distinct points, then

  ---

• Two given circles ${{x}^{2}}+{{y}^{2}}+ax+by+c=0$ and ${{x}^{2}}+{{y}^{2}}+dx+ey+f=0$ will intersect each other orthogonally, only when

  ---

• The equation of a circle passing through points of intersection of the circles ${{x}^{2}}+{{y}^{2}}+13x-3y=0$ and $2{{x}^{2}}+2{{y}^{2}}+4x-7y-25=0$ and point (1, 1) is

  ---

• P, Q and R are the centres and ${{r}_{1}},\,\,{{r}_{2}},\,\,{{r}_{3}}$ are the radii respectively of three co-axial circles, then $QRr_{1}^{2}+RP\,r_{2}^{2}+PQr_{3}^{2}$ is equal to

  ---

• For all values of $\theta$ , the locus of the point of intersection of the lines $x\cos \theta +y\sin \theta =a$ and $x\sin \theta -y\cos \theta =b$ is

  ---