Multiple Choice Questions on The angle between the two lines lx my n 0 and l rsquo x m rsquo y n rsquo 0 is given by tan ndash 1 ........... for NDA Exam Preparation

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Multiple Choice Questions

The angle between the two lines lx my n 0 and l rsquo x m rsquo y n rsquo 0 is given by tan ndash 1 ...........

Mathematics (NDA) Coordinate Geometry
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    The angle between the two lines lx + my + n = 0 and l’x + m’y + n’ = 0 is given by tan–1 \theta . What \theta equal to?

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