circle

Related Questions

• The equation of the circle through the points of intersection of ${{x}^{2}}+{{y}^{2}}-1=0$ , ${{x}^{2}}+{{y}^{2}}-2x-4y+1=0$ and touching the line $x+2y=0$ , is

  ---

• The equation of the circle which touches both the axes and whose radius is a, is

  ---

• 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

  ---

• The number of common tangents to the circles ${{x}^{2}}+{{y}^{2}}=1$ and ${{x}^{2}}+{{y}^{2}}-4x+3=0$ is

  ---

• The number of circles touching the lines $x=0$ , $y=a$ and $y=b$ is

  ---