Using the fact that the modulus |ei 1| is the distance between the points ei and

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Using the fact that the modulus |eiθ − 1| is the distance between the points eiθ and 1 (see Sec. 4), give a geometric argument to find a value of θ in the interval 0 ≤ θ < 2π that satisfies the equation |eiθ − 1| = 2.
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Complex Variables and Applications

ISBN: 978-0073051949

8th edition

Authors: James Brown, Ruel Churchill

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