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# The tan method in Julia

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### Overview

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.

### Example

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

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

## find tan of 90 degree
degree = 90
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.

### Explanation

• 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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tan
julia
math
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