circle

Related Questions

• If the line $lx+my+n=0$ be a tangent to the circle ${{(x-h)}^{2}}+{{(y-k)}^{2}}={{a}^{2}},$ then

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• The locus of the centre of a circle which cuts orthogonally the circle ${{x}^{2}}+{{y}^{2}}-20x+4=0$ and which touches $x=2$ is

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• The equation of polar of the point (1, 2)with respect to the circle ${{x}^{2}}+{{y}^{2}}=7$ , is

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• If the circle ${{x}^{2}}+{{y}^{2}}=4$ bisects the circumference of the circle ${{x}^{2}}+{{y}^{2}}-2x+6y+a=0$ , then a equals

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• The equation of the chord of contact, if the tangents are drawn from the point (5, –3) to the circle ${{x}^{2}}+{{y}^{2}}=10$ , is

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