Question 9
VectorsQRS is a triangle such that QR = (3i + 2j) and SR = (−5i + j). find SQ.
- A.8i + j
- B.2i − j
- C.−2i − 3j
- D.−8i − j
Show the answer and explanation
Answer: D (−8i − j)
Explanation
SQ = SR + RQ = SR − QR = (−5i + j) − (3i + 2j) = −8i − j.