PHP acos function

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acos

(PHP 3, PHP 4, PHP 5)

acos — Arc cosineDescriptionfloat acos ( float arg )

Returns the arc cosine of arg in radians.
acos() is the complementary function of
cos(), which means that
a==cos(acos(a)) for every value of a that is within
acos()’ range.

See also:
acosh(),
asin(), and
atan().

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Published:
2.26.07 / 1am
Category:
PHP Functions
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