circle

Related Questions

• The equation of director circle of the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}},$ is

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• The equation of the circle concentric with the circle ${{x}^{2}}+{{y}^{2}}+8x+10y-7=0$ and passing through the centre of the circle ${{x}^{2}}+{{y}^{2}}-4x-6y=0$ is

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• If the line $x-2y=k$ cuts off a chord of length 2 from the circle ${{x}^{2}}+{{y}^{2}}=3$ , then $k =$

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• If OA and OB be the tangents to the circle ${{x}^{2}}+{{y}^{2}}-6x-8y+21=0$ drawn from the origin O, then $AB =$

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• The equation of circle whose diameter is the line joining the points (–4, 3) and (12, –1) is

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