math.atan

JavaScript | Math.atan()方法 (JavaScript | Math.atan() Method)

Math.atan() is a function in math library of JavaScript that is used to find the value of arctangent of a number.

Math.atan()是JavaScript數學庫中的函數，用于查找數字的反正切值。

    atan(x) = arctan(x) = y => tan(y) = x

Syntax:

句法：

    Math.atan(p);

Parameter(s):

參數：

• p – It represents the value whose arctangent value to be found.

  p –表示要找到其反正切值的值。

Return value:

返回值：

The return type of this method is number, it returns the arctangent value of the given p.

此方法的返回類型為number ，它返回給定p的反正切值。

Example 1: Valid values for the method

示例1：方法的有效值

console.log(Math.tanh(0));
console.log(Math.tanh(6));
console.log(Math.tanh(Infinity));
console.log(Math.tanh(-0.56));
console.log(Math.tanh(-Infinity));

Output

輸出量

0
0.9999877116507956
1
-0.5079774328978962
-1

Example 2: Passing non-numeric values.

示例2：傳遞非數字值。

console.log(Math.atanh("IncludeHelp"));
// Output: NaN
console.log(Math.atan(1 + 4i));
// Output: Uncaught SyntaxError: Invalid or unexpected token

翻譯自: https://www.includehelp.com/code-snippets/math-atan-method-with-example-in-javascript.aspx

math.atan