pair-st-lines

Related Questions

• If the bisectors of the angles between the pairs of lines given by the equation $a{{x}^{2}}+2hxy+b{{y}^{2}}=0$ and $a{{x}^{2}}+2hxy+b{{y}^{2}}+\lambda ({{x}^{2}}+{{y}^{2}})=0$ be coincident, then $\lambda =$

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• The angle between the pair of straight lines ${{x}^{2}}-{{y}^{2}}-2y-1=0$, is

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• The lines joining the origin to the points of intersection of the line $3x-2y=1$ and the curve $3{{x}^{2}}+5xy-3{{y}^{2}}+2x+3y=0$, are

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• If the lines joining origin to the points of intersection of the line $fx-gy=\lambda $ and the curve ${{x}^{2}}+hxy-{{y}^{2}}+gx+fy=0$ be mutually perpendicular, then

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• If the ratio of gradients of the lines represented by $a{{x}^{2}}+2hxy+b{{y}^{2}}=0$is 1 : 3, then the value of the ratio ${{h}^{2}}:ab$is

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