Grade 10Algebra
Prove that summation of (n-k)cos(2kπ/n) from k=1 to n-1 is equal to -n/2, where n≥3 is an integer.
Prove that summation of (n-k)cos(2kπ/n) from k=1 to n-1 is equal to -n/2, where n≥3 is an integer.
1 Answer
Saurabh Koranglekar
Dear Student
Please find the link attached
https://www.askiitians.com/forums/Algebra/prove-that-summation-of-n-k-cos-2k-n-from-k-1-t_156950.htm
Regards
Please find the link attached
https://www.askiitians.com/forums/Algebra/prove-that-summation-of-n-k-cos-2k-n-from-k-1-t_156950.htm
Regards
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