1.

If Z = (1+ 2i)/(1 - (1 - i)2), then find Arg (Z).

Answer»

Given Z = (1 + 2i)/(1 - (1 - i)2)

= (1 + 2i)/(1 - (1 - 2i + i2)) = (1 + 2i)/(1 + 2i) = 1

= cos0° + isin0°

∴ Arg(Z) = 0°



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