$\"\"$

The complex number is z = $\"\"$ .

Compare the complex number with a + ib.

a = $\"\"$ 9 and b = $\"\"$ .

The absolute value of z :

$\"\"$

a = $\"\"$ 9 < 0, so the angle is :

$\"\"$

Remember that, the angle $\"\"$ , is in radians.

The trigonometric form is $\"\"$ .

$\"\"$ $\"\"$

The complex number is plotted as an absolute value of 11.

$\"The$

$\"\"$

The trigonometric form is $\"\"$ .