pair-st-lines

Related Questions

• If the slope of one of the line represented by the equation $a{{x}^{2}}+2hxy+b{{y}^{2}}=0$ be $\lambda$ times that of the other, then

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• The value of k so that the equation $2{{x}^{2}}+5xy+3{{y}^{2}}+6x+7y+k=0$ represents a pair of straight lines, is

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• The angle between the lines ${{x}^{2}}-xy-6{{y}^{2}}-7x+31y-18=0$ is

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• The equation of one of the line represented by the equation ${{x}^{2}}+2xy\cot \theta -{{y}^{2}}=0$, is

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• If the lines represented by the equation $a{{x}^{2}}-bxy-{{y}^{2}}=0$ make angles $\alpha $ and $\beta $ with the x-axis, then $\tan (\alpha +\beta )$=

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