The arccosine of sine of x is equal to (when k is integer number k∈ℤ):
arccos(sin x) = π/2 – arcsin(sin x)
= π/2 – (x+2kπ)
= –x – 2kπ + π/2
= –x + (0.5-2k)π
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The arccosine of sine of x is equal to (when k is integer number k∈ℤ):
arccos(sin x) = π/2 – arcsin(sin x)
= π/2 – (x+2kπ)
= –x – 2kπ + π/2
= –x + (0.5-2k)π