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OpenStudy (alexh107):
Express the complex number in trigonometric form. -5i
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OpenStudy (alexh107):
Is it 5(cos 270° + i sin 270°)
OpenStudy (mathstudent55):
@LinxNeedsHelpPlease sin (pi/2) = +1 Problem is -5i
OpenStudy (mathstudent55):
@alexh107 You are correct.
OpenStudy (alexh107):
Okay thank you! Would you mind helping me with one more?
OpenStudy (mathstudent55):
ok
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OpenStudy (alexh107):
Express the complex number in trigonometric form. \[-2 +2\sqrt{3}i\]
OpenStudy (alexh107):
@mathstudent55
OpenStudy (mathstudent55):
Recall the 30-60-90 triangle. |dw:1455903025030:dw|
OpenStudy (alexh107):
Okay, what would I do next?
OpenStudy (mathstudent55):
|dw:1455903241106:dw|
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