OpenEuphoria

arcsin

include math.e 
namespace math 
public function arcsin(trig_range x) 

returns an angle given its sine.

Parameters:

1. value : an object, each atom in which will be acted upon.

Returns:

An object, the same shape as value. When value is an atom, the result is an atom, an angle whose sine is value.

Errors:

If any atom in value is not in the -1..1 range, it cannot be the sine of a real number, and an error occurs.

Comments:

A value between -PI/2 and +PI/2 (radians) inclusive will be returned.

This function may be applied to an atom or to all elements of a sequence.

arcsin is not as fast as arctan.

Example 1:

s = arcsin({-1,0,1}) 
s is {-1.570796327, 0, 1.570796327} 

See Also:

arccos, arccos, sin