a·b = 0 → vectors are perpendicular → θ = 90°.
Back to JEE Advanced 2026 Vectors & 3D Geometry
JEE Advanced 2026 — Mathematics Vectors & 3D Geometry
medium
mcq
2026
Official previous-year question
Verified 30 May 2026.
Question
The angle between vectors a = 2î + 3ĵ and b = -3î + 2ĵ is:
Options
- A
0°
- B
45°
- C
90°
- D
180°
Solution
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