Verified Solution • 2025–26 Session moderate

QJEEM19Ma1d76: JEE Main 2019 Physics - Class 11 JEEM19Ma1d76 Solution: Let 3 i ^ + j ^ ,      i ^ + 3 j ^…

Let 3i^+j^,    i^+3j^  and   βi^+(1−β)j^ respectively be the position vectors of the points A, B and C with respect to the origin O. If the distance of C from the bisector of the acute angle between OA and OB is 32, then the sum of all possible values of β is :

Multiple Choice Options

  • A 4
  • B 1
  • C 2
  • D 3

Step-by-Step Verified Solution

Angle bisector is x − y = 0

⇒  |β−(1−β)|2=32

⇒  |2β−1|=3

⇒  β = 2 or − 1

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