# If #A= <-8 ,3 ,-1 ># and #B= <-3 ,4 ,8 >#, what is #A*B -||A|| ||B||#?

##### 1 Answer

Mar 24, 2016

The dot (scalar) product

#### Explanation:

The question is essentially 'What is the difference between the dot product of two vectors and the product of their lengths?'

First find the dot product:

Now the length of each vector:

So the product