# Function acsc Calculate the inverse cosecant of a value, defined as `acsc(x) = asin(1/x)`. For matrices, the function is evaluated element wise. ## Syntax ```js math.acsc(x) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `x` | number | Complex | Array | Matrix | Function input ### Returns Type | Description ---- | ----------- number | Complex | Array | Matrix | The arc cosecant of x ## Examples ```js math.acsc(0.5) // returns number 0.5235987755982989 math.acsc(math.csc(1.5)) // returns number ~1.5 math.acsc(2) // returns Complex 1.5707963267948966 -1.3169578969248166 i ``` ## See also [csc](csc.md), [asin](asin.md), [asec](asec.md)