$\"\"$

The expression of complex numbers is $\"\"$ .

The result of these complex numbers in trigonometric form is $\"\"$ .

To check this result by multiplying these complex numbers algebraically as follows:

$\"\"$ (Write original expression of complex numbers)

$\"\"$ (Multiply)

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Simplify)

So, the solution is verified. $\"\"$

The result of complex numbers match with the product of complex numbers.