Let vectors ā = (2,1,-4), b = (-3,0,1), and c = (-1,-1,2).
calculate the following:
vector ā * vector b =
what is the angle ɵ ab between vector ā and vector b?
2 vector b * 3 vector c =

Vector Ā * Vector B = -10. This is the scalar dot product and can calculated by taking the magnitude in the x, y, and z of the two vectors and the operation is done. 
The angle  Ɵ AB between vector Ā and vector B is 133.635°.
2 Vector B * 3 Vector C = -1. A similar approach is done for this one.

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