# Function csch Calculate the hyperbolic cosecant of a value, defined as `csch(x) = 1 / sinh(x)`. For matrices, the function is evaluated element wise. ## Syntax ```js math.csch(x) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `x` | number | Complex | Unit | Array | Matrix | Function input ### Returns Type | Description ---- | ----------- number | Complex | Array | Matrix | Hyperbolic cosecant of x ## Examples ```js // csch(x) = 1/ sinh(x) math.csch(0.5); // returns 1.9190347513349437 1 / math.sinh(0.5); // returns 1.9190347513349437 ``` ## See also [sinh](sinh.md), [sech](sech.md), [coth](coth.md)