Question: Let zinC such that | z | = 9 with R e ( z ) > 0 . ( a ) Compute Arg ( z

Let zinC such that |z|=9 with Re(z)>0.
(a) Compute
Arg(z+9iz-9i)
and enter its value in the box below.
Syntax advice: Enter your answer using Maple syntax, for example, enter 9 as 9**.
(b) Briefly explain in words, in one or two sentences, how you obtained your answer in part (a).
Let zinC such that | z | = 9 with R e ( z ) > 0 .

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