What is the angle between these two vectors?

  • Thread starter IDKFysics
  • Start date
  • #1
2
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Vectors A and B have scalar product -4.00 and their vector product has magnitude 9.00.

Here's what I did:

ABcos=-4
ABsin=9

sin/cos=-2.25

tan=-2.25

angle=-66?

I entered this and it says it's incorrect. What did I do wrong?
 

Answers and Replies

  • #2
6
0
Pay attention that the angle between two vectors won't be negative ...

There should be an angle that its cos is - and its sin is +

angle: 180 - 66 = 114 degree
 

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