circle

Related Questions

• The radical axis of the pair of circle ${{x}^{2}}+{{y}^{2}}=144$ and ${{x}^{2}}+{{y}^{2}}-15x+12y=0$ is

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• The length of common chord of the circles ${{(x-a)}^{2}}+{{y}^{2}}={{a}^{2}}$ and ${{x}^{2}}+{{(y-b)}^{2}}={{b}^{2}}$ is

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• If $a>2b>0$ then the positive value of m for which $y=mx-b\sqrt{1+{{m}^{2}}}$ is a common tangent to ${{x}^{2}}+{{y}^{2}}={{b}^{2}}$ and ${{(x-a)}^{2}}+{{y}^{2}}={{b}^{2}}$ , is

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• The equation $2{{x}^{2}}+2{{y}^{2}}+4x+8y+15=0$ represents

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• $x=7$ touches the circle ${{x}^{2}}+{{y}^{2}}-4x-6y-12=0$ , then the coordinates of the point of contact are

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