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OpenStudy (anonymous):
Express the complex number in trigonometric form. -3i
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OpenStudy (kenljw):
3 EXP[i3PI/2]
OpenStudy (anonymous):
I don't understand
OpenStudy (kenljw):
I'm using Euler's equation EXP[ix] = cos(x) + isin(x) EXP is related to natural log, e, and x is in radian
OpenStudy (anonymous):
how do you know to insert 3pi/2?
OpenStudy (kenljw):
sin(3PI/2) = -1
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OpenStudy (anonymous):
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