circle

Related Questions

• Two tangents drawn from the origin to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ will be perpendicular to each other, if

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• If $5x-12y+10=0$ and $12y-5x+16=0$ are two tangents to a circle, then the radius of the circle is

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• The equation of the circle which passes through the intersection of ${{x}^{2}}+{{y}^{2}}+13x-3y=0$ and $2{{x}^{2}}+2{{y}^{2}}+4x-7y-25=0$ and whose centre lies on $13x+30y=0$ is

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• The equations of the tangents to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ parallel to the line $\sqrt{3}x+y+3=0$ are

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• The square of the length of the tangent from (3, –4) on the circle ${{x}^{2}}+{{y}^{2}}-4x-6y+3=0$ is

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