circle

Related Questions

• Let $P({{x}_{1}},{{y}_{1}})$ and $Q({{x}_{2}},{{y}_{2}})$ are two points such that their abscissa ${{x}_{1}}$ and ${{x}_{2}}$ are the roots of the equation ${{x}^{2}}+2x-3=0$ while the ordinates ${{y}_{1}}$ and ${{y}_{2}}$ are the roots of the equation ${{y}^{2}}+4y-12=0$ . The centre of the circle with PQ as diameter is

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• If the straight line $y=mx+c$ touches the circle ${{x}^{2}}+{{y}^{2}}-4y=0$ , then the value of c will be

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• Centre of circle $(x-{{x}_{1}})(x-{{x}_{2}})$ $+(y-{{y}_{1}})(y-{{y}_{2}})$ $=0$ is

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• The circle passing through point of intersection of the circle $S=0$ and the line $P=0$ is

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• The equation of the circumcircle of the triangle formed by the lines $y+\sqrt{3}x=6,\ y-\sqrt{3}x=6,$ and $y=0$ , is

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