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ACOS !!!ACOS NAME SYNOPSIS DESCRIPTION RETURN VALUE ERRORS CONFORMING TO SEE ALSO ---- !!NAME acos - arc cosine function !!SYNOPSIS __#include __ ''x''__); __ !!DESCRIPTION The __acos()__ function calculates the arc cosine of ''x''; that is the value whose cosine is ''x''. If ''x'' falls outside the range -1 to 1, __acos()__ fails and ''errno'' is set. !!RETURN VALUE The __acos()__ function returns the arc cosine in radians and the value is mathematically defined to be between 0 and PI (inclusive). !!ERRORS __EDOM__ ''x'' is out of range. !!CONFORMING TO SVID 3, POSIX, BSD 4.3, ISO 9899 !!SEE ALSO asin(3), atan(3), atan2(3), cos(3), sin(3), tan(3) ----
7 pages link to
acos(3)
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Man3a
sin(3)
tan(3)
asin(3)
atan(3)
cos(3)
atan2(3)
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