$\"\"$

\

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

\

Rewrite the vectors by simplification:

\

$\"\"$ and $\"\"$ .

\

Angle beteween two vectors is $\"\"$ .

\

Magnitude of vector $\"\"$ :

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Magnitude of vector $\"\"$ :

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Dot product of $\"\"$ and $\"\"$ .

\

$\"\"$

\

Substitute corresponding values in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Therefore, $\"\"$ .

\

Angle between two vectors is $\"\"$ .

\

$\"\"$

\

Angle between two vectors is $\"\"$ .