circle

Related Questions

• If two circles ${{(x-1)}^{2}}+{{(y-3)}^{2}}={{r}^{2}}$ and ${{x}^{2}}+{{y}^{2}}-8x+2y+8=0$ intersect in two distinct points, then

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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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• The equations of the tangents to the circle ${{x}^{2}}+{{y}^{2}}-6x+4y=12$ which are parallel to the straight line $4x+3y+5=0$ , are

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• The value of c, for which the line $y=2x+c$ is a tangent to the circle ${{x}^{2}}+{{y}^{2}}=16$ , is

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• The two circles ${{x}^{2}}+{{y}^{2}}-2x-3=0$ and ${{x}^{2}}+{{y}^{2}}-4x-6y-8=0$ are such that

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