pair-st-lines

Related Questions

• Angle between the line joining the origin to the points of intersection of the curves $2{{x}^{2}}+3{{y}^{2}}+10x=0$ and $3{{x}^{2}}+5{{y}^{2}}+16x=0$ is

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• The values of h for which the equation $3{{x}^{2}}+2hxy-3{{y}^{2}}-40x+30y-75=0$ represents a pair of straight lines, are

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• 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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• The equation $4{{x}^{2}}+12xy+9{{y}^{2}}+2gx+2fy+c=0$ will represents two real parallel straight lines, if

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• The equation of the perpendiculars drawn from the origin to the lines represented by the equation $2{{x}^{2}}-10xy+12{{y}^{2}}+5x-16y-3=0$ is

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