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3peak101
28.08.2019 •
Mathematics
Write the complex number -12+16i in trigonometric form r(cos theta+i sin theta), with theta in the interval
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Ответ:
x = real = -12
y = imaginary = 16
(-12,16) is in 2nd quadrant, this means theta is between 90 and 180.
Next calculate "r", which is distance from (-12,16) to origin:
Finally, calculate theta:
Note: when you put this in your calculator it will give you -53.13 (4th quadrant)
Just add 180 so that angle is in correct quadrant.
Final
Ответ:
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Step-by-step explanation: