Question: What is the angle between vectors A u and Bu in each part of Exercise 12? Exercise 12 a. A = 3i + 4j

What is the angle θ between vectors A u and Bu in each part of Exercise 12?

Exercise 12

a. A = 3î + 4ĵ and B = 2î - 6ĵ.
b. A = 3î - 2ĵ and B = 6î + 4ĵ.

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