PYTHON acos

is this article helpful?
|
Python replacement for PHP's acos [ edit | history ] 
import math
math.acos(arg)

PHP acos

PHP original manual for acos [ show | php.net ]

acos

(PHP 4, PHP 5)

acos — Arc cosine

Description

float 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.

Parameters

arg

The argument to process

Return Values

The arc cosine of arg in radians.

See Also

Math Functions
PHP Manual