circle

Related Questions

• The equation of pair of tangents to the circle ${{x}^{2}}+{{y}^{2}}-2x+4y+3=0$ from $(6,-5)$ , is

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• The value of c, for which the line $y=2x+c$ is a tangent to the circle ${{x}^{2}}+{{y}^{2}}=16$ , is

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• The locus of the centre of circle which cuts the circles ${{x}^{2}}+{{y}^{2}}+4x-6y+9=0$ and ${{x}^{2}}+{{y}^{2}}-4x+6y+4=0$ orthogonally is

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• Locus of the points from which perpendicular tangent can be drawn to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ , is

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• A circle with centre (a, b) passes through the origin. The equation of the tangent to the circle at the origin is

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