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[" The value of "(1+cos(pi)/(9))(1+cos(3...

[" The value of "(1+cos(pi)/(9))(1+cos(3 pi)/(9))(1+cos(5 pi)/(9))(1+cos(7 pi)/(9))" is "],[[" (A) "(9)/(16)," (B) "(10)/(16)," (C) "(12)/(16)," (D) "(5)/(16)]]

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