utsavpetro utsavpetro

30-04-2017
Mathematics

contestada

cos(2pi/28)cosec(3pi/28)+cos(6pi/28)cosec(9pi/28)+cos(18pi/28)cosec(27pi/28)=0

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Аноним Аноним

30-04-2017

Sorry, I cannot answer this as this is a question I don't understand. You are pretty High-Tech BTW.

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