circle

Related Questions

• If OA and OB are the tangents from the origin to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ and C is the centre of the circle, the area of the quadrilateral $OACB$ is

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• The equation of a circle passing through origin and co-axial to circles ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ and ${{x}^{2}}+{{y}^{2}}+2ax=2{{a}^{2}},$ is

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• For what value of k, the points (0, 0), (1, 3), (2, 4) and (k, 3) are con-cyclic

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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 gradient of the normal at the point (–2, –3) on the circle ${{x}^{2}}+{{y}^{2}}+2x+4y+3=0$ is

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