circle

Related Questions

• The condition that the line $x\cos \alpha +y\sin \alpha =p$ may touch the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ 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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• If the circles ${{x}^{2}}+{{y}^{2}}+2ax+cy+a=0$ and ${{x}^{2}}+{{y}^{2}}-3ax+dy-1=0$ intersect in two distinct points $P$ and $Q$ then the line $5x+by-a=0$ passes through $P$ and $Q$ for

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• The area of triangle formed by the tangent, normal drawn at $(1,\sqrt{3})$ to the circle ${{x}^{2}}+{{y}^{2}}=4$ and positive x-axis, is

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• A point P moves in such a way that the ratio of its distance from two coplanar points is always a fixed number $(\ne 1)$ . Then its locus is

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