asin
asin
(PHP 4, PHP 5, PHP 7)
asin — Arc 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
- sin() - Sine
- asinh() - Inverse hyperbolic sine
- acos() - Arc cosine
- atan() - Arc tangent
← acosh
asinh →
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