simplify sqrt((3sin(a)+sin(3a))(-sin(a)+sin(3a))(sin(a)+sin(3a))(3sin(a)-sin(3a)))/sin(3a)simplify sqrt((3sin(a)+sin(3a))(-sin(a)+sin(3a))(sin(a)+sin(3a))(3sin(a)-sin(3a)))/sin(3a)

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