Math.cos() Method

Math.cos() return the cosine of a number. The cos method returns the number value between -1 and 1 its represent the cosine of the angle.

Syntax:

Math.cos(x)

Example:

<script>
    var one = Math.cos(45);
    document.writeln('Output of 45 is : ' + one + '</br></br>');
    var two = Math.cos(90);
    document.writeln('Output of 90 is : ' + two + '</br></br>');
    var three = Math.cos(-1);
    document.writeln('Output of -1 is : ' + three + '</br></br>');
    var four = Math.cos(2 * Math.PI);
    document.writeln('Output of 2 * Math.PI is : ' + four + '</br></br>');
</script>

Output:

Output of 45 is : 0.5253219888177297

Output of 90 is : -0.4480736161291702

Output of -1 is : 0.5403023058681398

Output of 2 * Math.PI is : 1

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