pair-st-lines

Related Questions

• If the lines represented by the equation $2{{x}^{2}}-3xy+{{y}^{2}}=0$ make angles $\alpha $and $\beta $ with x-axis, then ${{\cot }^{2}}\alpha +{{\cot }^{2}}\beta $=

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

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• The equation ${{x}^{2}}+k{{y}^{2}}+4xy=0$represents two coincident lines, if $k =$

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• The lines joining the points of intersection of line $x+y=1$ and curve ${{x}^{2}}+{{y}^{2}}-2y+\lambda =0$ to the origin are perpendicular, then the value of $1/\sqrt{10}$ will be

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