$\"\"$

\

Magnitude of the vector is $\"\"$ .

\

Direction angle is $\"\"$ .

\

A vector v from its magnitude and direction is $\"\"$ .

\

Substitute $\"\"$ and $\"\"$ in above vector.

\

$\"\"$

\

The vector is $\"\"$ .

\

$\"\"$

\

The vector is $\"\"$ .