circle

Related Questions

• Locus of the middle points of the chords of the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ which are parallel to $y=2x$ will be

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• Centre of the circle ${{(x-3)}^{2}}+{{(y-4)}^{2}}=5$ is

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• Radical axis of the circles $3{{x}^{2}}+3{{y}^{2}}-7x+8y+11=0$ and ${{x}^{2}}+{{y}^{2}}-3x-4y+5=0$ is

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• The lengths of tangents from a fixed point to three circles of coaxial system are ${{t}_{1}},{{t}_{2}},{{t}_{3}}$ and if P, Q and R be the centres, then $QRt_{1}^{2}+RPt_{2}^{2}+PQt_{3}^{2}$ is equal to

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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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