circle

Related Questions

• If polar of a circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ with respect to $(x',y')$ is $Ax+By+C=0$ , then its pole will be

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• The locus of a point which moves so that the ratio of the length of the tangents to the circles ${{x}^{2}}+{{y}^{2}}+4x+3=0$ and ${{x}^{2}}+{{y}^{2}}-6x+5=0$ is $2:3$ is

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• The circles ${{x}^{2}}+{{y}^{2}}=9$ and ${{x}^{2}}+{{y}^{2}}-12y+27=0$ touch each other. The equation of their common tangent is

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• Square of the length of the tangent drawn from the point $(\alpha ,\beta )$ to the circle $a{{x}^{2}}+a{{y}^{2}}={{r}^{2}}$ is

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• The two circles ${{x}^{2}}+{{y}^{2}}-2x+6y+6=0$ and ${{x}^{2}}+{{y}^{2}}-5x+6y+15=0$

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