$\"\"$

\

The vector is $\"\"$ .

\

If the vector is $\"\"$ , then the magnitude is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Direction angles: $\"\"$ , $\"\"$ and $\"\"$ .

\

Consider $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Conisder $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Consider $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Vector in terms of cosine angles: $\"\"$ .

\

Substitute $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$

\

The direction angles of each vector is $\"\"$ , $\"\"$ , $\"\"$ .

\

Vector is Vector is Vector is Vector is Vector is Vector is Vector isVector is Vector is Vector is Vector is Vector is Vector is Vector is $\"\"$ .