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Related Questions

• If $\frac{1}{a{b}'}+\frac{1}{b{a}'}=0,$ then lines $\frac{x}{a}+\frac{y}{b}=1$ and $\frac{x}{{{b}'}}+\frac{y}{{{a}'}}=1$ are

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• The product of the perpendiculars drawn from the points $(\pm \sqrt{{{a}^{2}}-{{b}^{2}},}0)$ on the line$\frac{x}{a}\cos \theta +\frac{y}{b}\sin \theta =1$, is

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• The value of $\lambda $ for which the lines $3x+4y=5,$ $5x+4y=4$ and $\lambda x+4y=6$ meet at a point is

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• The angle between the lines $y=(2-\sqrt{3})x+5$ and $y=(2+\sqrt{3})x-7$ is

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• The equations of two lines through $(0,\ a)$ which are at distance ‘a’ from the point $(2a,\ 2a)$ are

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