circle

Related Questions

• If the line $3x-4y=\lambda $ touches the circle ${{x}^{2}}+{{y}^{2}}-4x-8y-5=0$ , then $\lambda $ is equal to

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• The pole of the straight line $9x+y-28=0$ with respect to circle $2{{x}^{2}}+2{{y}^{2}}-3x+5y-7=0$ , is

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• If OA and OB are the tangents from the origin to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ and C is the centre of the circle, the area of the quadrilateral $OACB$ is

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• Give the number of common tangents to circle ${{x}^{2}}+{{y}^{2}}+2x+8y-23=0$ and ${{x}^{2}}+{{y}^{2}}-4x-10y+9=0$

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• If the line $x-2y=k$ cuts off a chord of length 2 from the circle ${{x}^{2}}+{{y}^{2}}=3$ , then $k =$

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