circle

Related Questions

• Middle point of the chord of the circle ${{x}^{2}}+{{y}^{2}}=25$ intercepted on the line $x-2y=2$ is

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• The condition that the line $x\cos \alpha +y\sin \alpha =p$ may touch the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ is

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• The pole of the straight line $9x+y-28=0$ with respect to circle $2{{x}^{2}}+2{{y}^{2}}-3x+5y-7=0$ , is

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• The line $3x-2y=k$ meets the circle ${{x}^{2}}+{{y}^{2}}=4{{r}^{2}}$ at only one point, if ${{k}^{2}}$ =

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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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