circle

Related Questions

• The condition of the curves $a{{x}^{2}}+b{{y}^{2}}=1$ and $a'{{x}^{2}}+b'{{y}^{2}}=1$ to intersect each other orthogonally, is

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• If the tangent at a point $P(x,y)$ of a curve is perpendicular to the line that joins origin with the point P, then the curve is

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• The circle ${{x}^{2}}+{{y}^{2}}-8x+4y+4=0$ touches

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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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• The equation of a diameter of circle ${{x}^{2}}+{{y}^{2}}-6x+2y=0$ passing through origin is

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