z^7 - i = 0 the answer need to be in polar form between - pie to pie. Thank you in advance
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$\displaystyle z^7=i\Rightarrow z^7=\cos\frac{\pi}{2}+i\sin\frac{\pi}{2}$ Then, $\displaystyle z_k=\cos\frac{\frac{\pi}{2}+2k\pi}{7}+i\sin\frac{\ frac{\pi}{2}+2k\pi}{7}, \ k=0,1,\ldots ,6$
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