JavaScript Math tanh() Method

The Javascript Math.tanh() method is used to calculate the value of the hyperbolic tangent of a number. 

Syntax:

Math.tanh(x)

Parameter: This method accepts a single parameter as mentioned above and described below:

• x: which is a number for which the value of hyperbolic tangent is going to be calculated.

Return value: It returns the calculated value of the hyperbolic tangent of the number.< Below example illustrate the Math.tanh() method in JavaScript:

Example: Here formula for calculating the hyperbolic tangent of any number e is a mathematical constant having an approximate value equal to 2.718.

Input :Math.tanh(0)
Output : 0

Example: In the same way hyperbolic tangent of any number can be calculated just after replacing p with the desired number. Here the same as the above calculation, when we put 18 instead of x then the value becomes as output shown above.

Input : Math.tanh(18)
Output : 0.9999999999999996

Example: Below is an example of the Math.tanh() Method.

javascript

<script>
    // Printing hyperbolic tangent of some numbers
    // taken as parameter of Math.tanh() function.
    console.log(Math.tanh(0));
    console.log(Math.tanh(1));
    console.log(Math.tanh(5));
    console.log(Math.tanh(22));
    console.log(Math.tanh(-2));
    console.log(Math.tanh(4));
</script>

Output:

0
0.7615941559557649
0.9999092042625951
1
-0.9640275800758169
0.999329299739067

Example: It is an error case because the complex number can not be taken as the parameter of the function only integer value can be taken as the parameter. 

javascript

<script>
    // complex number can not be calculated
    // as the hyperbolic tangent.
    console.log(Math.tanh(1 + 2i));
</script>

Output:

Error: Invalid or unexpected token

Example: Other than integer nothing is accepted as the parameter of the function which is why here string as the parameter gives NaN i.e, not a number. 

javascript

<script>
    // Any string value as the parameter of the function
    // gives NaN i.e, not a number
    // because only number can be used as the parameters.
    console.log(Math.tanh("geeksforgeeks")+"<br>");
    console.log(Math.tanh("gfg"));
</script>

Output:

NaN
NaN

Example: Its practical application is that whenever we need to find the value of the hyperbolic tangent of a number that time we take the help of Math.tanh() function in JavaScript. 

javascript

<script>
    // Printing hyperbolic tangent of some
    // numbers from 0 to 9
    // taken as parameter of Math.tanh() function.
    for (i = 0; i < 10; i++)
    {
        console.log(Math.tanh(i) + "<br>");
    }
</script>

Output:

0
0.7615941559557649
0.9640275800758169
0.9950547536867305
0.999329299739067
0.9999092042625951
0.9999877116507956
0.9999983369439447
0.9999997749296758
0.999999969540041

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

Supported Browsers:

• Google Chrome 38 and above
• Firefox 25 and above
• Opera 25 and above
• Safari 8 and above
• Edge 12 and above