function acsc( x ) {
	return asin( 1.0 / x );
}
Computes the arccosecant of a number.

## Method

```text
\operatorname{acsc}(x) = \operatorname{asin}(\frac{1}{x})
```

@param {number} x - input value
@returns {number} arccosecant (in radians)

@example
var v = acsc( 1.0 );
// returns ~1.57

@example
var v = acsc( 3.141592653589793 );
// returns ~0.32

@example
var v = acsc( -3.141592653589793 );
// returns ~-0.32

@example
var v = acsc( NaN );
// returns NaN