circle

Related Questions

• The equation of the common chord of the circles ${{(x-a)}^{2}}+{{(y-b)}^{2}}={{c}^{2}}$ and ${{(x-b)}^{2}}+{{(y-a)}^{2}}={{c}^{2}}$ is

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• The equation of the circle which passes through the origin, has its centre on the line $x+y=4$ and cuts the circle ${{x}^{2}}+{{y}^{2}}-4x+2y+4=0$ orthogonally, is

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• An infinite number of tangents can be drawn from (1, 2) to the circle ${{x}^{2}}+{{y}^{2}}-2x-4y+\lambda =0$ , then $\lambda =$

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• The number of common tangents to the circles ${{x}^{2}}+{{y}^{2}}=1$ and ${{x}^{2}}+{{y}^{2}}-4x+3=0$ is

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• The equation of a circle with centre $(-4,\ 3)$ and touching the circle ${{x}^{2}}+{{y}^{2}}=1$ , is

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