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JavaScript SIN

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The JavaScript Sin function is one of the JavaScript Math function which is used to calculate the Trigonometry Sine for the specified expression. In this article we will show you, How to use SIN() function in JavaScript Programming language with example.

The mathematical formula behind the Trigonometry Sine function is as shown below:

SIN(x) = Length of the Opposite Side / Length of the Hypotenuse

TIP: Please refer JavaScript ASIN Function article to find the Arc Sine of specified expression.

Syntax of a JavaScript Sin Function

The basic syntax of the Sin Function in JavaScript Programming language is as shown below:

Math.sin(number);

Number: It can be a number or a valid numerical expression for which you want to find Sine value.

  • If the number argument is positive or negative number, sin() function will return the Sine value.
  • If the number argument is not a number, sin() function will return NaN.

NOTE: The Sin() function will return the value between -1 and 1.

JavaScript SIN Function Example

The JavaScript Sin Function allows you to find the trigonometry Sine for the numeric values. In this example, We are going to find the Sine values of different data types and display the output

JAVASCRIPT CODE

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript SIN Function </title>
</head>
<body>
  <h1> JavaScript SIN Function </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>
  <script>
    document.getElementById("Pos").innerHTML = Math.sin(20);
    document.getElementById("Neg").innerHTML = Math.sin(-10);
    document.getElementById("Dec").innerHTML = Math.sin(40.45);
    document.getElementById("Neg_Dec").innerHTML = Math.sin(-60.75);
    document.getElementById("Str").innerHTML = Math.sin("JavaScript");
    document.getElementById("Null").innerHTML = Math.sin(null);
    document.getElementById("Multi").innerHTML = Math.sin(25 + 55 - 77);
  </script>
</body>
</html>

OUTPUT

JavaScript SIN Function

ANALYSIS

First, We used the SIN() Function directly on both the Positive integer and negative integer.

  document.getElementById("Pos").innerHTML = Math.sin(20);
  document.getElementById("Neg").innerHTML = Math.sin(-10);

Next, We used the SIN() Function on both the Positive and negative Decimal values. If you observe the above screenshot, Sin() function will work perfectly with decimal values as well

 document.getElementById("Dec").innerHTML = Math.sin(40.45);
 document.getElementById("Neg_Dec").innerHTML = Math.sin(-60.75);

Next, We tried SIN() Function on String value. As we said before, this will return NaN (Not a Number) as output

document.getElementById("Str").innerHTML = Math.sin("JavaScript");

Next, We tried SIN() Function on Null value and it return Zero as output

document.getElementById("Null").innerHTML = Math.sin(null);

In the below statement, We used the SIN() Function directly on multiple values.

document.getElementById("Multi").innerHTML = Math.sin(25 + 55 - 77);

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