If $z=x+y i$ is a complex number, then $|z|$ equals which of the following? (A) $x^{2}+y^{2}$ (B) $|x|+|y|$ (C) $\sqrt{x^{2}+y^{2}}$ (D) $\sqrt{|x|+|y|}$
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The magnitude of a complex number $z = x + yi$ is given by the formula: $|z| = \sqrt{x^2 + y^2}$ Show more…
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