circle

Related Questions

• The equation of radical axis of the circles ${{x}^{2}}+{{y}^{2}}+x-y+2=0$ and $3{{x}^{2}}+3{{y}^{2}}-4x-12=0,$ is

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• The equation of the circle having as a diameter, the chord $x-y-1=0$ of the circle $2{{x}^{2}}+2{{y}^{2}}-2x-6y-25=0$ , is

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• The gradient of the tangent line at the point $(a\cos \alpha ,a\sin \alpha )$ to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ , is

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• If the straight line $y=mx$ is outside the circle ${{x}^{2}}+{{y}^{2}}-20y+90=0$ , then

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• The equation of the circle of radius 5 and touching the coordinate axes in third quadrant is

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