circle

Related Questions

• 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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• The line $lx+my+n=0$ is normal to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ , if

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• The condition that the line $x\cos \alpha +y\sin \alpha =p$ may touch the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ is

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• The area of the curve ${{x}^{2}}+{{y}^{2}}=2ax$ is

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• Locus of the point, the difference of the squares of lengths of tangents drawn from which to two given circles is constant, is

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