JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

1 of 1

Analyzing +4 | -1

If the pair of lines

a x^2-2 x y+b y^2=0

and

b x^2-2 x y+a y^2=0

be such that each pair bisects the angle between the other pair, then

|a-b|

equals to

View answer and explanation

Correct option: B

Option B (2) is correct because the condition that each pair of lines bisects the angle between the other pair leads to the equation

|a-b|=2

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