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1) arccos 0+ arcsin 1 + arctg √3 + arcctg (-√3/3)
2) 5 arccos 1 - 6 arcsin (-1) + 3 arctg 1 + 2 arccos (-√3/2)
1) arccos 0+ arcsin 1 + arctg √3 + arcctg (-√3/3)
2) 5 arccos 1 - 6 arcsin (-1) + 3 arctg 1 + 2 arccos (-√3/2)
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