# CSCH

**The CSCH function returns the hyperbolic cosecant of a number.**

This function takes a single [Number](../../variable-data-types/the-number-variable-data-type) as input. It outputs that Number's hyperbolic tangent.

#### Declaration

```javascript
CSCH(number) -> hyperbolic_cosecant
```

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#### Parameters

**number** (required, type: `Number`) The number to calculate the hyperbolic cosecant of.&#x20;

#### Return Values

**hyperbolic\_cosecant** (type: `Number`) The hyperbolic cosecant of the given number.

#### Examples

The following example returns the hyperbolic cosecant of 1:

```javascript
CSCH(1) -> 0.8509181282393216
```
