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Find the sum of n terms of the seriesCos^3(a) +Cos ^3(3a) +Cos^3(5a) +..... +Cos ^3(2n-1)a

Find the sum of n terms of the seriesCos^3(a) +Cos ^3(3a) +Cos^3(5a) +..... +Cos ^3(2n-1)a

Grade:12th pass

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4405 Points
3 years ago
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