Question 962409: Can you please help with this equation: Write complex number in polar form: √7+√21 • i
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Write complex number in polar form: √7+√21 • i
Complex Number form:: x + yi
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Your Problem::
x = sqrt(7)
y = sqrt(21)
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Converting to Polar:
r = sqrt[x^2+y^2] = sqrt[7+21] = sqrt(28) = 2sqrt(7)
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theta = arctan(y/x) = arctan(sqrt(21)/sqrt(7) = arctan(sqrt(3)) = pi/3
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Ans: (2sqrt(7),pi/3)
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Cheers,
Stan H
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