JEE MATHEMATICS MCQ: STRAIGHT LINES

1 Easy

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Analyzing +4 | -1

The diagonals of the parallelogram whose sides are

lx + my + n = 0,\;lx + my + n' = 0,\;mx + ly + n = 0,\;mx + ly + n' = 0

include an angle

View answer and explanation

Correct option: B

\pi /2

Option B (

\pi /2

) is correct because the parallelogram formed by the given lines is a rhombus, and the diagonals of a rhombus are perpendicular.

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