JavaScript atan

The JavaScript atan function is a Math function that is used to calculate the trigonometry Arc Tangent for the specified expression. Arc Tangent is also called the inverse of a TANGENT function. The syntax of the JavaScript atan Function is


JavaScript atan Function Example

In this JavaScript example, We are going to find the Arc Tangent values of different data types and display the output.

For Str element id, we used the String Value and it returns NaN (Not a Number). Next, we tried the Null Values in this Math function returns Zero as output.

<!DOCTYPE html>
    <title> JavaScriptATANFunction </title>
  <h1> JavaScriptATANFunction </h1>
  <p id = "Pos"></p>
  <p id = "Neg"></p>
  <p id = "Dec"></p>
  <p id = "Neg_Dec"></p>
  <p id = "Str"></p>
  <p id = "Exp"></p>
  <p id = "Null"></p>
  <p id = "Multi"></p>
    document.getElementById("Pos").innerHTML = Math.atan(1);
    document.getElementById("Neg").innerHTML = Math.atan(-1);
    document.getElementById("Dec").innerHTML = Math.atan(0.45);
    document.getElementById("Neg_Dec").innerHTML = Math.atan(-0.75);
    document.getElementById("Str").innerHTML = Math.atan("JavaScript");
    document.getElementById("Null").innerHTML = Math.atan(null);
    document.getElementById("Multi").innerHTML = Math.atan(25 + 55 - 77);
JavaScript ATAN Example