The sin function in JavaScript computes the sine of a specified number. The output generated by the sin function lies within the interval of -1 to 1, corresponding to the sine value of the angle.
Syntax
The sin function can be denoted using the syntax outlined below:
Example
Math.sin(num)
Parameter
num - A number.
Return
The sine of the number.
JavaScript Math sin method example
In this section, we will explore the sin function by examining a series of examples.
Example 1
Let's see a simple example of sin method.
Example
<script>
document.writeln(Math.sin(1)+"<br>");
document.writeln(Math.sin(2));
</script>
Output:
Output
0.8414709848078965
0.9092974268256817
Example 2
In this illustration, we will demonstrate the use of the sin function with negative values.
Example
<script>
document.writeln(Math.sin(-1)+"<br>");
document.writeln(Math.sin(-0.5));
</script>
Output:
Output
-0.8414709848078965
-0.479425538604203
Example 3
Let us examine the sin function using a variety of test scenarios.
Example
<script>
document.writeln(Math.sin(0)+"<br>");
document.writeln(Math.sin(Math.PI));
</script>
Output:
Output
0
1.2246467991473532e-16
Example 4
In this section, you have the opportunity to evaluate the sin function using your own custom test cases.
Example
<script>
function display()
{
var x=document.getElementById("num").value;
document.getElementById("result").innerHTML=Math.sin(x);
}
</script>
<form>
Enter a number: <input type="text" id="num">
<input type="button" onclick="display()" value="submit">
</form>
<p><span id="result"></span></p>