JEE Main · 2024 · 08 Apr 2024 · Shift 2 · Straight Lines

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If the line segment joining the points and subtends an angle at the origin, then the absolute value of the product of all possible values of a is :
  1. (A)6
  2. (B)8
  3. (C)2
  4. (D)4✓ Correct

Answer: (D)

Solution

Slopes from origin: , . Angle between them is :


; \quad .
Product of possible values: , absolute value .

JEE Main · 2024 · 08 Apr 2024 · Shift 2 · Single correct option

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