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OpenStudy (anonymous):
compute the modulus and argument of each complex number a.-5i b.(sqrt 10)(cos(5 pi/7)+i sin(5pi/7))
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OpenStudy (anonymous):
a) magnitude is 5, angle will be -90 because it is only imaginary. b) magnitude will be (sqrt(sqrt(10)^2 + 1)), angle is 5pi/7.
OpenStudy (anonymous):
Note my answer for a is in degrees and b is in radians
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