Find U ● V, angle between them is 55°, |u| = 6, |v|=4. I was wondering how to set this up, thanks.
The dot vector http://www.mathsisfun.com/algebra/ve...t-product.html
This is the geometric dot vector because the definition has cos theta in it: $\displaystyle a \cdot b = |b| |a| cos \theta $
This is the algebraic dot vector, Let vector a=(x,y,z) b = (m,n,o) : $\displaystyle a \cdot b = (x,y,z) (m,n,o) \\= x*m + y*n + z*o $
Also you should note that the dot vector of any two vectors produces a SCALAR.
So provided the information and equation, can you solve the problem you have?