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The angle between one of the lines given by ${ax}^{2} + 2 hxy + {by}^{2} = 0$ and one of the lines of is equal to the angle between the other two lines of the system then $λ =$

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answer is D.

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Detailed Solution

Given pairs of lines $y^{2} (x^{2} - 2 x - 3) - 4 y (x^{2} - 2 x - 3) = 0$
$\Rightarrow (x^{2} - 2 x - 3) (y^{2} - 4 y) = 0$
$\Rightarrow (x - 3) (x + 1) (y) (y - 4) = 0$ is a square.

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