# What is the cross product of #<4 , 5 ,-9 ># and #<4, 8 ,-2 >#?

##### 1 Answer

Dec 27, 2016

The answer is

#### Explanation:

The cross product of 2 vectors,

is given by the determinant

and

Here, the 2 vectors are

And the cross product is

Verification, by doing the dot product

Therefore, the vector is perpendicular to the other 2 vectors