# If #A= <-5 ,-4 ,-1 ># and #B= <2 ,-9 ,8 >#, what is #A*B -||A|| ||B||#?

##### 1 Answer

Oct 13, 2016

#### Explanation:

For the dot-product of two vectors, one multiplies the corresponding components:

The magnitude of a vector is the square root of the sum of the squares of the components: