# If #A = <2 ,-5 ,-8 >#, #B = <-9 ,4 ,-5 ># and #C=A-B#, what is the angle between A and C?

##### 1 Answer

Nov 15, 2016

The angle is

#### Explanation:

Let's calculate

The angle

The dot product

The modulus of

The modulus of

Therefore,