The vectors are $\"\"$ .

Formula for the angle between two vectors is $\"\"$ .

Find dot product of the vectors $\"\"$ .

$\"\"$

$\"\"$ .

Find the magnitude of the vectors $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .

The angle is $\"\"$ .

Substitute corresponding values.

$\"\"$

$\"\"$ , not orthogonal.