circle

Related Questions

• 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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• The slope of the tangent at the point $(h,h)$ of the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ is

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• Which of the following is a point on the common chord of the circles ${{x}^{2}}+{{y}^{2}}+2x-3y+6=0$ and ${{x}^{2}}+{{y}^{2}}+x-8y-13=0$

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• If OA and OB be the tangents to the circle ${{x}^{2}}+{{y}^{2}}-6x-8y+21=0$ drawn from the origin O, then $AB =$

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• The equation of the circle which intersects circles ${{x}^{2}}+{{y}^{2}}+x+2y+3=0$ ,${{x}^{2}}+{{y}^{2}}+2x+4y+5=0$ and ${{x}^{2}}+{{y}^{2}}-7x-8y-9=0$ at right angle, will be

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