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Find the modulus of Z and if Z=4+3i?

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Find the modulus of Z and if Z=4+3i

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2 Answers

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by (35.1k points)

\(Z = 4 + 3i\)

\(|Z| = \sqrt{4^2 + 3^2}\)

\(= \sqrt{16 + 9}\)

\(= \sqrt{25}\)

\(= 5\)

Amplitude = \(\tan^{-1} (\frac 34)\)

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by (15 points)

z=4+3i

|z|=√16+9=√25

therefore |z|=5


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