_Added in 1.9.3_

*$tanh(N)*

Return the "hyperbolic tangent":https://en.wikipedia.org/wiki/Hyperbolic_function of N.

*Parameters*

table(ktable).
|*Parameter*|*Description*|
| N | The number. |

*Properties*

table(ktable).
|*Property*|*Description*|
| .deg | Returns the degree instead of angle. |