# If #A = <8 ,3 ,2 >#, #B = <6 ,-4 ,5 >#, and #C=A-B#, what is the angle between A and C?

##### 1 Answer

Nov 7, 2016

The angle is

#### Explanation:

The angle between two vectors is given by the dot product.

where

The dot product is

The modulus of

The modulus of

So