circle

Related Questions

• The equation of radical axis of the circles $2{{x}^{2}}+2{{y}^{2}}-7x=0$ and ${{x}^{2}}+{{y}^{2}}-4y-7=0$ is

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• If the circles ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ and ${{x}^{2}}+{{y}^{2}}-2gx+{{g}^{2}}-{{b}^{2}}=0$ touch each other externally, then

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• 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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• A tangent to the circle ${{x}^{2}}+{{y}^{2}}=5$ at the point $(1,–2)$..... the circle ${{x}^{2}}+{{y}^{2}}-8x+6y+20=0$

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• $x=7$ touches the circle ${{x}^{2}}+{{y}^{2}}-4x-6y-12=0$ , then the coordinates of the point of contact are

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