Apply de Moivre powers - official syllabus scenario
Read the official-HL feature being tested first. For a school study complex number \(z=4\operatorname{cis}(40^\circ)\), find the argument of \(z^4\) in degrees. Enter the requested value and choose the interpretation that matches the result.
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Worked practice: result and interpretation
Calculate the requested result first, then choose the interpretation that follows from it.