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JEE Main & Advanced Mathematics Sequence & Series Question Bank Numerical Value Type Questions - Sequences and Series

  • question_answer
    The value of \[\sum\limits_{k=1}^{10}{\left( \sin \frac{2k\pi }{11}+i\cos \frac{2k\pi }{11} \right)}\] is of the form \[{{i}^{k}},\] where k is smallest natural number, then k is

    Answer:

    3


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