circle

Related Questions

• The two circles ${{x}^{2}}+{{y}^{2}}-4y=0$ and ${{x}^{2}}+{{y}^{2}}-8y=0$

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• The equation to the tangents to the circle ${{x}^{2}}+{{y}^{2}}=4$ , which are parallel to $x+2y+3=0$ , are

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• The equation of the circle in the first quadrant which touches each axis at a distance 5 from the origin is

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• The two circles ${{x}^{2}}+{{y}^{2}}-2x+6y+6=0$ and ${{x}^{2}}+{{y}^{2}}-5x+6y+15=0$ touch each other. The equation of their common tangent is

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• If $\frac{x}{\alpha }+\frac{y}{\beta }=1$ touches the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ , then point $(1/\alpha ,\,1/\beta )$ lies on a/an

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