# tan

## Returns the tangent of val.

**Syntax:**

tan(val);

Argument |
Description |

val |
The angle (in radians) to return the tangent of. |

**Returns:** Real

### Description

In a right angled triangle *tan(val) = Opposite / Adjacent*
where val is one of the three angles.

**NOTE:** The value returned is in radians, not
degrees.

**Note:** Pi/2, (3 pi/2), -pi/2 and a vast number of other
values will error with this function due to their returning
infinity, a graph representation of this would produce asymptotes
at these values.

**Example:**

val = tan( pi );

This will set val to 0.

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