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Value of cos(pi/2n+1) + cos(3pi/2n+1) + cos(5pi/2n+1) +.... upto n terms equals? Answer is ½ but can’t figure out the solution

Value of cos(pi/2n+1) + cos(3pi/2n+1) + cos(5pi/2n+1) +.... upto n terms equals? Answer is ½ but can’t figure out the solution
 
 

Grade:12th Pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
Dear student

Please consider approach of mathematical induction, if problem still persist kindly repost

Regards

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