If a·b = 10, |a| = 2 and |b| = 5, then the angle between them is:
If a·b = 10, |a| = 2 and |b| = 5, then the angle between them is:
- A. 0°
- B. 60°
- C. 90°
- D. 120°
Answer: A) 0°
Explanation: cosθ = 10/(2×5) = 1.
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