# Find Angle Between Vector

• June 10th 2013, 10:57 AM
Mc3
Find Angle Between Vector
<3,1> x <4,-5>
• June 10th 2013, 11:33 AM
Plato
Re: Find Angle Between Vector
Quote:

Originally Posted by Mc3
<3,1> x <4,-5>

The angle between $\vec{A}~\&~\vec{B}$ is $\arccos \left( {\frac{{\vec{A}\cdot\vec{B}}}{{\|\vec{A}\|~\|\vec{ B}\|}}} \right)$
• June 10th 2013, 04:13 PM
Mc3
Re: Find Angle Between Vector
I tried cos^1 7/ square root 10 x square root 41 but it says error on my calc?
• June 10th 2013, 04:30 PM