Query: acos
OS: php
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
ACOS(3) 1 ACOS(3) acos - Arc cosineSYNOPSISfloat acos (float $arg)DESCRIPTIONReturns the arc cosine of $arg in radians. acos(3) is the complementary function of cos(3), which means that a==cos(acos(a)) for every value of a that is within acos(3)' range.PARAMETERSo $arg - The argument to processRETURN VALUESThe arc cosine of $arg in radians.SEE ALSOcos(3), acosh(3), asin(3), atan(3). PHP Documentation Group ACOS(3)
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