# Java.lang.StrictMath.sin() Method

## Description

The java.lang.StrictMath.sin() method returns the trigonometric sine of an angle.It include these 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.StrictMath.sin() method

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

## Parameters

a − This is an angle, in radians.

## Return Value

This method returns the sine of the argument.

NA

## Example

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

```package com.tutorialspoint;

import java.lang.*;

public class StrictMathDemo {

public static void main(String[] args) {

double d1 = (90*Math.PI)/180 , d2 = 0.0, d3 = (1.0/0.0) ;

// returns the trigonometric sine of an angle
double sinValue = StrictMath.sin(d1);
System.out.println("Trigonometric sine of d1 = " + sinValue);

sinValue = StrictMath.sin(d2);
System.out.println("Trigonometric sine of d2 = " + sinValue);

sinValue = StrictMath.sin(d3);
System.out.println("Trigonometric sine of d3 = " + sinValue);
}
}
```

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

```Trigonometric sine of d1 = 1.0
Trigonometric sine of d2 = 0.0
Trigonometric sine of d3 = NaN
```
java_lang_strictmath.htm