Question
The value of $\sum_{k=0}^{10}\left(\sin \frac{2 \mathrm{k} \pi}{10}-\mathrm{i} \cos \frac{2 \mathrm{k} \pi}{10}\right)$ is(a) 0(b) i(c) $-1$(d) $-\mathrm{i}$
Step 1
Step 1: We are given the sum $\sum_{k=0}^{10}\left(\sin \frac{2 \mathrm{k} \pi}{10}-\mathrm{i} \cos \frac{2 \mathrm{k} \pi}{10}\right)$. Show more…
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