# If #A = <8 ,9 ,4 >#, #B = <6 ,7 ,4 ># and #C=A-B#, what is the angle between A and C?

##### 1 Answer

Aug 5, 2016

If the measurement is in the opposite sense, the angle is

#### Explanation:

Use the the formula

angle

Now #theta

If the measurement is in the opposite sense, the angle is #180^o-

theta=161.33^o#

For checking the answer, you can use what I have used.