SubArea: Powers and roots of complex numbersLevel: AProject ID: 9000070103Accepted: 1Clonable: 0Easy: 1Evaluate the following complex number. \[ \left (\cos \pi + \mathrm{i}\sin \pi \right )^{9} \]\(- 1\)\(1\)\(\mathrm{i}\)\(-\mathrm{i}\)
