circle

Related Questions

• The equation of a diameter of circle ${{x}^{2}}+{{y}^{2}}-6x+2y=0$ passing through origin is

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• The radical centre of the circles ${{x}^{2}}+{{y}^{2}}-16x+60=0,\,{{x}^{2}}+{{y}^{2}}-12x+27=0,$ ${{x}^{2}}+{{y}^{2}}-12y+8=0$ is

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• The equation of a circle which touches both axes and the line $3x-4y+8=0$ and whose centre lies in the third quadrant is

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• In the co-axial system of circle ${{x}^{2}}+{{y}^{2}}+2gx+c=0$ , where g is a parameter, if $c>0$ then the circles are

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• If P is a point such that the ratio of the squares of the lengths of the tangents from P to the circles ${{x}^{2}}+{{y}^{2}}+2x-4y-20=0$ and ${{x}^{2}}+{{y}^{2}}-4x+2y-44=0$ is 2 : 3, then the locus of P is a circle with centre

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