For complex numbers Z1, Z2 which one of the following is true ____?
- arg (Z1 Z2) = arg Z1 + arg Z2
- arg (Z1 Z2) = arg Z1 - arg Z2
- arg (Z1 Z2) = arg Z1 . arg Z2
- None of these
Explanation
The argument of the product of two complex numbers is the sum of their arguments.
This property comes from the multiplication of complex numbers in polar form.
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