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Question: How to find angle with vectors

Question:How to find angle with vectors

EngNoob 64 Maple
February 18 2008
0

Hello.

I am haveing one or two issues with vectors.

I am trying to calculate the Angle.

The angle is between

a = s -d -f

b = 3s + d

and then the unit vector which lies perpendicular to a and b

.....

To figure to angle out would you use

cos(theta) = a.b / ( |a| * |b| )

Am i way off or am i close?

Thanks

 
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