Computes the arccosecant of a number.
input value
arccosecant (in radians)
var v = acsc( 1.0 ); // returns ~1.57
var v = acsc( 3.141592653589793 ); // returns ~0.32
var v = acsc( -3.141592653589793 ); // returns ~-0.32
var v = acsc( NaN ); // returns NaN
Computes the arccosecant of a number.