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find the value of:( 1+ cos(pi/8))(1+ cos(3pi/8))(1+ cos(5pi/8))(1+ cos(7pi/8)) = ? |
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Answer» find the value of: ( 1+ cos(pi/8))(1+ cos(3pi/8))(1+ cos(5pi/8))(1+ cos(7pi/8)) = ? |
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