# tan

tan(x)

Compute tangent of `x`, where `x` is in radians

## Examples

In the Julia programming language, the function `tan(x)` is used to compute the tangent of `x`, where `x` is in radians.

1. Compute tangent of an angle:

``````julia> tan(0.5)
0.5463024898437905``````

This example computes the tangent of the angle 0.5 radians.

2. Compute tangent of multiple angles:

``````julia> angles = [0.1, 0.2, 0.3];
julia> tan.(angles)
3-element Array{Float64,1}:
0.10033467208545047
0.2027100355086725
0.30933624960962357``````

It computes the tangent of each angle in the array `angles` using broadcast syntax `tan.(angles)`.

3. Compute tangent of a negative angle:
``````julia> tan(-0.8)
-1.0296385570503641``````

It computes the tangent of a negative angle.

Common mistake example:

``````julia> tan(pi/2)
ERROR: DomainError with tan, pi/2 is not a valid argument``````

In this example, `pi/2` is not a valid argument for the tangent function because the tangent of `pi/2` is undefined. Ensure that the input value is within the valid domain of the tangent function to avoid such errors.