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`and`(`*`(sin, `*`(A)) = `/`(`*`(BC), `*`(AB)), `and`(`/`(`*`(BC), `*`(AB)) = `/`(`*`(BC), `*`(sqrt(`+`(`*`(`^`(AC, 2)), `*`(`^`(BC, 2)))))), `and`(`/`(`*`(BC), `*`(sqrt(`+`(`*`(`^`(AC, 2)), `*`(`^`(B... 

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