Arccosine of cosine of x.
Since cosine is periodic, the arccosine of cosine of x is equal to x plus 2kπ when k is integer number k∈ℤ:
arccos(cos x) = x + 2kπ
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Arccosine of cosine of x.
Since cosine is periodic, the arccosine of cosine of x is equal to x plus 2kπ when k is integer number k∈ℤ:
arccos(cos x) = x + 2kπ