pair-st-lines

Related Questions

• One of the lines represented by the equation ${{x}^{2}}+6xy=0$ is

  ---

• If the angle between the lines represented by the equation ${{y}^{2}}+kxy-{{x}^{2}}$${{\tan }^{2}}A=0$be $2A$, then $k=$

  ---

• The value of $\lambda $ for which the equation ${{x}^{2}}-\lambda xy+2{{y}^{2}}+3x-5y+2=0$ may represent a pair of straight lines is

  ---

• The equation $12{{x}^{2}}+7xy+a{{y}^{2}}+13x-y+3=0$ represents a pair of perpendicular lines. Then the value of ‘a’ is

  ---

• The equation ${{(x+y)}^{2}}-({{x}^{2}}+{{y}^{2}})=0$ represents

  ---