Mathematics · Vector Algebra
Let a̅, b̅, and c̅ be three non-zero vectors such that c̅ is a unit vector perpendicular to both a̅ and b̅. If the angle between a̅ and b̅ is π 6 , then [a̅ b̅ c̅] 2 is:
- 1|a̅| 2 |b̅| 2
- 21 2 |a̅| 2 |b̅| 2
- 31 4 |a̅| 2 |b̅| 2✓
- 42 |a̅| 2 |b̅| 2
Correct answer
1 4 |a̅| 2 |b̅| 2
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