circle

Related Questions

• If the line $lx+my=1$ be a tangent to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ , then the locus of the point (l, m) is

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• Circle ${{x}^{2}}+{{y}^{2}}-4x-8y-5=0$ will intersect the line $3x-4y=m$ in two distinct points, if

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• If the line $y=mx+c$ be a tangent to the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ , then the point of contact is

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• The points of contact of the circle ${{x}^{2}}+{{y}^{2}}+2x+2y+1=0$ and the co-ordinate axes are

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• The line $(x-a)\cos \alpha +(y-b)$ $\sin \alpha =r$ will be a tangent to the circle ${{(x-a)}^{2}}+{{(y-b)}^{2}}={{r}^{2}}$

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