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This is documentation for Caché & Ensemble. See the InterSystems IRIS version of this content.

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# COSH

Returns the hyperbolic cosine of an angle.

## Synopsis

```COSH(number)
```

### Arguments

 number An expression that resolves to a number that expresses an angle in degrees.

## Description

The COSH function takes an angle in degrees and returns the ratio of two sides of a right triangle. The ratio is the length of the side adjacent to the angle divided by the length of the hypotenuse. This ratio is in the range of 1 to -1 (inclusive).

## Examples

The following example uses the COSH function to return the hyperbolic cosine of an angle:

```Dim MyAngle
MyAngle = 1.3;        ! Define angle in degrees.
PRINT COSH(MyAngle);  ! Returns hyperbolic cosine ratio.```

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