$\"\"$

The vectors are $\"\"$ , $\"\"$ and $\"\"$ .

Find $\"\"$ .

If $\"\"$ and $\"\"$ are two vectors, then the cross product of $\"\"$ is $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

Find $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .