16cos(2pie÷15)* cos(4pie÷15)* cos(8pie^15)* cos(16 pie÷15)=1

annisanisa2188

2016-04-09 06:17:57

16cos(2pie÷15)* cos(4pie÷15)* cos(8pie^15)* cos(16 pie÷15)=1

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CandieLefew374

2016-04-09 11:01:17

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