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In Julia, `tan()`

is an in-built function used to calculate the trigonometric tangent value of a variable specified in radians.

$tan(x) = \frac{opposite\space side}{adjacent\space side}$

The code snippet below shows how to use the `tan()`

function in Julia.

```
tan(x)
```

The `tan()`

method accepts one argument: `x`

. The angle for which the user seeks the trigonometric tangent is specified in radians. It returns the tan for `x`

.

Let's run a script that uses the `tan()`

method.

## find tan of 30 degree degree = 30 radian = deg2rad(degree) println( "tan($(radian)) => $(tan(radian))") ## find tan of 90 degree degree = 90 radian = deg2rad(degree) println( "tan($(radian)) => $(tan(radian))")

Hit run to see the tan() function in action. Change the values being passed to the tan() function and observe the results.

- In
**line**`2`

we create a new variable`degree`

and initialize it to`30`

. - In
**line**`3`

we use`deg2rad()`

to convert the value of`degree`

to radian and store it in`radian`

. - In
**line**`4`

we use the tan method with the variable`radian`

as an argument. This line will calculate the tangent value of`radian`

. - In
**line**`7`

we update the value of`degree`

to`90`

. - In
**line**`8`

we use`deg2rad()`

to convert the value of`degree`

to radian and store it in`radian`

. - In
**line**`9`

we use the tan method with the variable`radian`

as an argument. This line will calculate the tangent value of`radian`

.

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