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sin^3 (pi/2))+sin^3 (2 (pi/2))+sin^3 (3 (pi/2)) = (sin(3(pi/2))+sin(2(pi/2))+sin(pi/2))^3
sin^3 (pi/2))+sin^3 (2 (pi/2))+sin^3 (3 (pi/2)) = (sin(3(pi/2))+sin(2(pi/2))+sin(pi/2))^3
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