Помагите пожалуйста вычислить, решение писменно:
1)arccos √2/2
2)arccos (- 1/2)
3)1/2arccos √3/2+ 1/3 arccos (-√2/2)
4)0,7 arcsin0 + arcsin ( -1/2)
5)1/2 arcsin (-√3/2) + arccos (-√3/2)
6)arctg (-arccos (-√2/2)/arcsin 1/2
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