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## Homework Statement

[/B]## Homework Equations

## The Attempt at a Solution

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I am not sure if this is the correct way of finding the difference between two vectors. I thought that if "B" was negative then it's direction would change as well as it's angle. If the angle changes then are my calculations wrong (I used original angle)? I was also curious to know if a similar process applies when multiplying two vectors?

Thanks in advance

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