# Java.lang.Math.sin() Method

## Description

The java.lang.Math.sin(double a) the trigonometric sine of an angle. Special cases −

• If the argument is NaN or an infinity, then the result is NaN.

• If the argument is zero, then the result is a zero with the same sign as the argument.

## Declaration

Following is the declaration for java.lang.Math.sin() method

```public static double sin(double a)
```

## Parameters

a − an angle, in radians.

## Return Value

This method returns the sine of the argument.

NA

## Example

The following example shows the usage of lang.Math.sin() method.

```package com.tutorialspoint;

import java.lang.*;

public class MathDemo {

public static void main(String[] args) {

// get two double numbers numbers
double x = 45;
double y = -180;

// print the trigonometric sine for these doubles
System.out.println("Math.sin(" + x + ")=" + Math.sin(x));
System.out.println("Math.sin(" + y + ")=" + Math.sin(y));
}
}
```

Let us compile and run the above program, this will produce the following result −

```Math.sin(0.7853981633974483)=0.7071067811865475
Math.sin(-3.141592653589793)=-1.2246467991473532E-16
```
java_lang_math.htm