$\"\"$

The expression is $\"\"$ .

Find the polar form of above expression.

Conversion formula : $\"\"$ .

in the conversion formula.

$\"\"$

The angle is $\"\"$ .

Substitute $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

De Moivre’s Theorem to find polar form of complex number : $\"\"$ .

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

$\"\"$

$\"\"$ .

Blake is correct.

$\"\"$

Blake is correct.