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asin

(PHP 4, PHP 5, PHP 7)
Arc sine
float asin ( float $arg )

Returns the arc sine of arg in radians. asin() is the complementary function of sin(), which means that a==sin(asin(a)) for every value of a that is within asin()'s range.

Parameters:
arg

The argument to process

Returns:

The arc sine of arg in radians

See also:

sin() -

asinh() -

acos() -

atan() -

doc_php
doc_php
2016-02-24 16:02:26
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