circle

Related Questions

• The number of tangents which can be drawn from the point (–1,2) to the circle ${{x}^{2}}+{{y}^{2}}+2x-4y+4=0$ is

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• Polar of origin (0, 0) with respect to the circle ${{x}^{2}}+{{y}^{2}}+2\lambda x+2\mu y+c=0$ touches the circle ${{x}^{2}}+{{y}^{2}}={{r}^{2}}$ , if

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• The equation of tangent to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ parallel to$y=mx+c$ is

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• If O is the origin and OP, OQ are tangents to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ , the circumcentre of the triangle $OPQ$ is

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• The equation of line passing through the points of intersection of the circles $3{{x}^{2}}+3{{y}^{2}}-2x+12y-9=0$ and ${{x}^{2}}+{{y}^{2}}+6x+2y-15=0$ , is

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