What is the angle between the vectors a = î − ĵ + k̂ and b = −î + ĵ − k̂?
What is the angle between the vectors a = î − ĵ + k̂ and b = −î + ĵ − k̂?
- A. 0°
- B. 90°
- C. 180°
- D. 45°
Answer: C) 180°
Explanation: Notice that b = −a. Vectors that are negative of each other are anti-parallel, so the angle between them is 180°.
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