Cosine Wave

Geometry Level pending

. cos(π ÷ 15) cos(2π ÷ 15) cos(3π ÷ 15)cos(4π ÷ 15) cos(5π ÷ 15) cos(6π ÷ 15)cos(7π ÷ 15) = A/B.

Input your answer as A + B.

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