- #1

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## Homework Statement

If z = cis @ where @ is acute, determine the modulus and argument of z-1

## Homework Equations

## The Attempt at a Solution

As the moudlus of z is 1 z lies on the unit circle. And I can not think of anything more. I drew a graph to see how z-1 seems like in graph and stucked.

Help me please!