# IMTAN

## Content

This function calculates the tangent of specified complex number.

## Syntax

`IMTAN(complex_num)`

## Arguments

[Required] The *complex\_num* argument is a complex number to return the tangent for.

## Remarks

An error is returned if the *complex\_num* argument is not in the form "x+yi" or "x+yj".

## Examples

`IMTAN("8+2i")` 
`IMTAN("9+3i")`