circle

Related Questions

• If the line $y=\sqrt{3}x+k$ touches the circle ${{x}^{2}}+{{y}^{2}}=16$ , then $k =$

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• If the line $y=mx+c$ be a tangent to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ , then the point of contact is

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• The radical centre of the circles ${{x}^{2}}+{{y}^{2}}+4x+6y=19,{{x}^{2}}+{{y}^{2}}=9$ and ${{x}^{2}}+{{y}^{2}}-2x-2y=5$ will be

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• A circle touches the x-axis and also touches the circle with centre at (0, 3) and radius 2. The locus of the centre of the circle is

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• Line $y=x+a\sqrt{2}$ is a tangent to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ at

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