Answer: 3i - 2j + 5k.
- A 3i + 2j - 5k
- B 3i - 2j + 5k
- C 3i + 2j + 5k
- D -3i + 2j + 5k
Correct answer: B. 3i - 2j + 5k
Explanation: Position vector of P(x,y,z) = xi + yj + zk = 3i - 2j + 5k.
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