If #A = <6 ,8 ,-3 >#, #B = <7 ,1 ,-4 ># and #C=A-B#, what is the angle between A and C?
1 Answer
Nov 8, 2016
The angle is
Explanation:
Let's start by calculating
The angle between
where
The dot product is
The modulus of
The modulus of
So