JEE Advanced Mathematics question

The equation of the bisector of the acute angle between the lines and is

(A)
(B)Correct
(C)
(D)none of these

Answer: (B)

Solution

Write both lines with positive constant terms: and . Here , so the origin lies in the **acute** angle, and the bisector of the angle containing the origin is (same signs)

= ⇒ 3x

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Question ID VK-108813