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Mathematics 19 Online
OpenStudy (anonymous):

Express the complex number in trigonometric form. -2 + 2 square root of 3 i

OpenStudy (anonymous):

OpenStudy (freckles):

major hint: \[2(-1+\sqrt{3}i) \\ 2 \frac{2}{2}(-1+\sqrt{3}i) \\ 2(2)(\frac{-1}{2}+\frac{\sqrt{3}}{2}i) \\ 4(\frac{-1}{2}+\frac{\sqrt{3}}{2}i)\]

OpenStudy (anonymous):

so it would be \[4(\cos \frac{ 2\pi }{ 3 } + i \sin \frac{ 2\pi }{ 3 }) ?\]

OpenStudy (anonymous):

@freckles

OpenStudy (freckles):

yah

OpenStudy (freckles):

\[4e^{\frac{2\pi}{3}i}\] this is also called polar form

OpenStudy (anonymous):

oh okay i understand now. thanks!!

OpenStudy (freckles):

cool stuff

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