circle

Related Questions

• The circles ${{x}^{2}}+{{y}^{2}}+4x+6y+3=0$ and $2({{x}^{2}}+{{y}^{2}})+6x+4y+C=0$ will cut orthogonally, if C equals

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• Given the circles ${{x}^{2}}+{{y}^{2}}-4x-5=0$ and ${{x}^{2}}+{{y}^{2}}+6x-2y+6=0$ . Let P be a point $(\alpha ,\beta )$ such that the tangents from P to both the circles are equal, then

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• $y-x+3=0$ is the equation of normal at $\left( 3+\frac{3}{\sqrt{2}},\frac{3}{\sqrt{2}} \right)$ to which of the following circles

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• If d is the distance between the centres of two circles, ${{r}_{1}},{{r}_{2}}$ are their radii and $d={{r}_{1}}+{{r}_{2}}$ , then

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• If the line $x=k$ touches the circle ${{x}^{2}}+{{y}^{2}}=9$ , then the value of $k$ is

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