pair-st-lines

Related Questions

• Difference of slopes of the lines represented by equation ${{x}^{2}}({{\sec }^{2}}\theta -{{\sin }^{2}}\theta )-2xy\tan \theta +{{y}^{2}}{{\sin }^{2}}\theta =0$is

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• If the equation $12{{x}^{2}}-10xy+2{{y}^{2}}+11x-5y+k=0$ represents two straight lines, then the value of k is

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• The equation ${{x}^{2}}-7xy+12{{y}^{2}}=0$ represents

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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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• The equation to the pair of straight lines through the origin which are perpendicular to the lines $2{{x}^{2}}-5xy+{{y}^{2}}=0,$is

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