circle

Related Questions

• Length of the tangent from $({{x}_{1}},{{y}_{1}})$ to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ is

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• The equation of circle whose centre lies on $3x-y-4=0$ and$x+3y+2=0$ and has an area 154 square units is

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• If the line $lx+my+n=0$ be a tangent to the circle ${{(x-h)}^{2}}+{{(y-k)}^{2}}={{a}^{2}},$ then

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• If circles ${{x}^{2}}+{{y}^{2}}+2ax+c=0$ and ${{x}^{2}}+{{y}^{2}}+2by+c=0$ touch each other, then

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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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