Answer: 2.
- A 1
- B 2
- C 3
- D 0
Correct answer: B. 2
Explanation: The scalar triple product equals the determinant, which is 2.
Triangle law of vector addition: placing vector b at the head of vector a, the diagonal from the start to the final head gives the resultant a + b.
Concept context
Vectors, dot product, cross product, and geometric applications