The angle between the straight lines ${x^2} - {y^2} - 2\;x - 1 = 0,$ is

JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

1 of 1

Application +4 | -1

The angle between the straight lines

{x^2} - {y^2} - 2\;x - 1 = 0,

View answer and explanation

Correct option: A

90^\circ

Option A (

90^\circ

) is correct because the given equation represents a pair of perpendicular lines since the coefficient of

x^2

plus the coefficient of

y^2

equals zero.

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