Find the Modulus and the Argument for the Complex Number $z = - i$

question 32

Multiple Choice

Find the modulus and the argument for the complex number. $z = - i$

• A) \(r = - 1 , \theta = \pi / 2\)
• B) \(r = 1 , \theta = \pi\)
• C) \(r= i , \theta = 0\)
• D) \(r= \sqrt { 2 } , \theta = 3 \pi / 2\)
• E) \(r = 1 , \theta = 3 \pi / 2\)

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