The value of `lim sum_(k=1)^n (n-k)/n cos((4k)/n)` equals to
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Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The value of `lim sum_(k=1)^n (n-k)/n cos((4k)/n)` equals to
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