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Question

The argument of the complex number 2+3i(3+i)(1+2i)2 is equal to

A
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B
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C
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Solution

The correct option is A
We have z = 2+3i(3+i)+ (1+2i)2= 2+3i3+i+14+4i
Hence, we have arg (z) = tan1 (23)

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