"If z=cis(ø), find the argument and modulus of 1-z"
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Originally Posted by karldiesen "If z=cis(ø), find the argument and modulus of 1-z" Let's say that . Then because implies .
Originally Posted by karldiesen "If z=cis(ø), find the argument and modulus of 1-z" Do you know what "cis" means? If so you can write z in the form "a+ bi", subtract from 1 and then find the argument and modulus of that.
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