Question

Find the product of 5(cos pi/3 + i sin pi/3) x 3(cos pi + i sin pi)

Answer 1

\[\large 15(\cos \frac{ 4\pi }{ 3 }+i \sin \frac{ 4\pi }{ 3 })\]is this the result you are expecting or do you need a simplified form?

Answer 2

no i got it