CSS types.atan() Function
Last Updated :
03 Feb, 2023
The trigonometric atan() CSS function returns the inverse tangent of a value between -∞ and +∞. The single calculation in the function returns the number of radians that correspond to an angle between -90deg and 90deg.
Syntax:
/* numeric values */
transform: rotate(atan(-0.9));
transform: rotate(atan(1));
/* Other values */
transform: rotate(atan(pi / 2));
transform: rotate(atan(e / 4));
Parameter: This function takes the following parameters:
- number: This is the numeric value translated from -∞ to +∞.
Return Value: The inverse tan of a number will always return an angle between -90deg and 90deg.
- If number is 0⁻, the result is 0⁻.
- If number is +∞ the result is 90deg.
- If number is -∞ the result is -90deg.
Example 1: Let’s take an example to understand how the atan() function works.
HTML
<!DOCTYPE html>
< html lang = "en" >
< head >
< style >
div.heading {
width: 100px;
height: 30px;
color: green;
padding: 30px;
}
div.heading-1 {
transform: rotate(atan(0.1));
}
div.heading-2 {
transform: rotate(atan(0.2));
}
div.heading-3 {
transform: rotate(atan(1));
}
div.heading-4 {
transform: rotate(atan(-0.2));
}
div.heading-5 {
transform: rotate(atan(-0.1));
}
</ style >
</ head >
< body >
< h1 style = "color: green;" >GeeksforGeeks</ h1 >
< h2 >atan() function</ h2 >
< div class = "heading heading-1" >GeeksforGeeks</ div >
< div class = "heading heading-2" >GeeksforGeeks</ div >
< div class = "heading heading-3" >GeeksforGeeks</ div >
< div class = "heading heading-4" >GeeksforGeeks</ div >
< div class = "heading heading-5" >GeeksforGeeks</ div >
</ body >
</ html >
|
Output:
Example 2: Let’s take an example to understand how the atan() function works using pi and e values.
HTML
<!DOCTYPE html>
< html lang = "en" >
< head >
< style >
div.heading {
width: 100px;
height: 30px;
color: green;
padding: 30px;
}
div.heading-1 {
transform: rotate(atan(pi/8));
}
div.heading-2 {
transform: rotate(atan(e/5));
}
</ style >
</ head >
< body >
< h1 style = "color: green;" >GeeksforGeeks</ h1 >
< h2 >atan() function</ h2 >
< div class = "heading heading-1" >GeeksforGeeks</ div >
< div class = "heading heading-2" >GeeksforGeeks</ div >
</ body >
</ html >
|
Output:
Supported browsers: The browsers supported by atan() function are listed below:
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