The value of _ k=1 ^ 10 ( 2 k 11 +i 2 k 11 ) i 5
Mathematics · JEE Main · NTA Exams — Complex Numbers and Quadratic Equations
The value of \(\sum_{k=1}^{10}\left(\sin \frac{2 k \pi}{11}+i \cos \frac{2 k \pi}{11}\right) i 5\)
- - i
- i
- 1
- - 1
Answer
(D) - 1
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