circle

Related Questions

• The radius of the circle, having centre at (2,1) whose one of the chord is a diameter of the circle ${{x}^{2}}+{{y}^{2}}-2x-6y+6=0$ is

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• The equation of pair of tangents to the circle ${{x}^{2}}+{{y}^{2}}-2x+4y+3=0$ from $(6,-5)$ , is

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• Equation of the circle which touches the lines $x=0,\ y=0$ and $3x+4y=4$ is

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• 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

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• Two circles ${{S}_{1}}={{x}^{2}}+{{y}^{2}}+2{{g}_{1}}x+2{{f}_{1}}y+{{c}_{1}}=0$ and ${{S}_{2}}={{x}^{2}}+{{y}^{2}}+2{{g}_{2}}x+2{{f}_{2}}y+{{c}_{2}}=0$ cut each other orthogonally, then

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