Please help me do this math problem. It is open ended with no answer choices to choose from, and I am sooo confused about how to do it. The attachment shows the problem.

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asked Jan 21, 2018 138k views

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Sharath · Answer 1 · 2018-01-27T08:21:33+0000

Use Moivre Formula to find cube roots of 64(cos219+isin219)

Cubic roots =∛[64(cos219+isin219)] = [64(cos219+isin219)]^(1/3)

= 4[(cos219+isin219)]^(1/3)=4[cos(219)/3+isin219/3)]=
= 1.169 + 3.82 i

Please help me do this math problem. It is open ended with no answer choices to choose from, and I am sooo confused about how to do it. The attachment shows the problem.

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