What is Math.sin() in JavaScript?

In JavaScript, Math is a built-in object that contains different methods and properties used to perform mathematical operations. It contains a sin() function, which is used to compute the sine of a specified angle.

Syntax

Math.sin(param);

Parameter

  • param: This is the angle for which we want to compute the sine. Its type is Number and it is measured in radians.

Number in JavaScript is a 64-bit double-precision value which is the same as double in C# or Java.

Return value

  • Number: It returns the sine of the given angle stored in param. It is of Number type. Its range is:

    • -1 <= result <= 1

  • NaN: The function returns NaN if param is positive or negative Infinity.

To convert degrees to radians, use the following formula.

  • Radians = Degrees x π /180

where π = 3.14159, approximately.

Example

console.log("sin(-1) = " + Math.sin(-1));
console.log("sin(0) = " + Math.sin(0));
console.log("sin(1) = " + Math.sin(1));
console.log("sin(∞) = " + Math.sin(Infinity));
console.log("sin(-∞) = " + Math.sin(-Infinity));

Output

  • sin ( -1 ) = -0.8414709848078965
  • sin ( 0 ) = 0
  • sin ( 1 ) = 0.8414709848078965
  • sin ( ∞ ) = NaN
  • sin ( -∞ ) = NaN

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