Scholar Repository
Home>Manual>Arc sine

Arc sine


asin

(PHP 4, PHP 5)

asinArc sine

Description

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

Return Values

The arc sine of arg in radians

See Also


Home>Manual>Arc sine