Verified Solution • 2025–26 Session
hard
QJEEM_2024_8: JEE Main 2024 JEEM_2024_8 Solution: Two vectors each of magnitude A are inclined at angle θ with…
Two vectors each of magnitude A are inclined at angle θ with each other, then magnitude of resultant vector is?
Multiple Choice Options
- A A cos²(θ/2)
- B 2A cos(θ/2)
- C 2A cosθ
- D A cos(θ/2)
Step-by-Step Verified Solution
R = √(a² + b² + 2ab cos θ) => a = b = A => R = √(A² + A² + 2A² cos θ) => R = A√(2 + 2cos θ) => R = 2A cos(θ/2)