circle

Related Questions

• If the straight line $y=mx$ is outside the circle ${{x}^{2}}+{{y}^{2}}-20y+90=0$ , then

  ---

• The equation $a{{x}^{2}}+b{{y}^{2}}+2hxy+2gx+2fy+c=0$ will represent a circle, if

  ---

• A line meets the coordinate axes in A and B. A circle is circumscribed about the triangle OAB. If m and n are the distance of the tangents to the circle at the points A and B respectively from the origin, the diameter of the circle is

  ---

• The equation of normal to the circle $2{{x}^{2}}+2{{y}^{2}}-2x-5y+3=0$ at (1, 1) is

  ---

• If P is a point such that the ratio of the squares of the lengths of the tangents from P to the circles ${{x}^{2}}+{{y}^{2}}+2x-4y-20=0$ and ${{x}^{2}}+{{y}^{2}}-4x+2y-44=0$ is 2 : 3, then the locus of P is a circle with centre

  ---