---
title: tan
card_id: 65714
---

# tan

```
the tan of [ph:number]
```

Value returned: a number equal to the trigonometric tangent of `[ph:number]` expressed in radians

Note: There are 2 * pi radians in 360 degrees. 

## Examples

```
the tan of 0  -- returns 0
the tan of pi -- returns 0
the tan of pi / 3  -- returns 0
the tan of (pi / 3) -- returns 1.732051
```

## Related Topics

* [atan](/HyperTalkReference/functions/atan)
* [cos](/HyperTalkReference/functions/cos)
* [numberFormat](/HyperTalkReference/properties/numberFormat)
* [sin](/HyperTalkReference/functions/sin)