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Please do solve this question number is 30. Hurry up now

Please do solve this question number is 30. Hurry up now

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Grade:12th pass

2 Answers

Arun
25757 Points
5 years ago
Dear student...please remove the cartoon frim the image as it has totally covered the question... Regards....Arun (askIITians forum expert)
Vui
38 Points
5 years ago
Use Euler`s form ..e^(iπ/2^r)=cos(iπ/2^r)+isin(iπ/2^r)Now write them as required in question by putting the value of r.Take e^(iπ/2 ) common and I will find a gp.Sum it and get the answer.Answer is -1

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