circle

Related Questions

• 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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• 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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• Equation of the tangent to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ which is perpendicular to the straight line $y=mx+c$ is

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• For all values of $\theta$ , the locus of the point of intersection of the lines $x\cos \theta +y\sin \theta =a$ and $x\sin \theta -y\cos \theta =b$ is

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• The equation of a circle passing through the point (4, 5) and having the centre at (2, 2) is

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