circle

Related Questions

• If the equation ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ represents a circle with x-axis as a diameter and radius a, then

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• The equation of the circle which passes through the points (2, 3) and (4, 5) and the centre lies on the straight line $y-4x+3=0$ , is

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• Two circles ${{S}_{1}}={{x}^{2}}+{{y}^{2}}+2{{g}_{1}}x+2{{f}_{1}}y+{{c}_{1}}=0$ and ${{S}_{2}}={{x}^{2}}+{{y}^{2}}+2{{g}_{2}}x+2{{f}_{2}}y+{{c}_{2}}=0$ cut each other orthogonally, then

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• A circle has radius 3 units and its centre lies on the line $y=x-1$ . Then the equation of this circle if it passes through point (7, 3), is

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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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