# Java Math sin() method with Examples

The java.lang.Math.sin() returns the trignometric sine of an angle in between 0.0 and pi. If the argument is NaN or infinity, then the result is NaN. If the argument is zero, then the result is a zero with the same sign as the argument. The value returned will be between -1 and 1.

Syntax :

```public static double sin(double a)
Parameter :
a : the value whose sine is to be returned.
```

Return :
This method returns the sine value of the argument.

Example 1 : To show working of java.lang.Math.sin() method.

 `// Java program to demonstrate working ` `// of java.lang.Math.sin() method ` `import` `java.lang.Math; ` ` `  `class` `Gfg { ` ` `  `    ``// driver code ` `    ``public` `static` `void` `main(String args[]) ` `    ``{ ` `        ``double` `a = ``30``; ` `         `  `        ``// converting values to radians ` `        ``double` `b = Math.toRadians(a); ` ` `  `        ``System.out.println(Math.sin(b)); ` ` `  `        ``a = ``45``; ` `         `  `        ``// converting values to radians ` `        ``b = Math.toRadians(a); ` ` `  `        ``System.out.println(Math.sin(b)); ` ` `  `        ``a = ``60``; ` `         `  `        ``// converting values to radians ` `        ``b = Math.toRadians(a); ` ` `  `        ``System.out.println(Math.sin(b)); ` ` `  `        ``a = ``90``; ` `         `  `        ``// converting values to radians ` `        ``b = Math.toRadians(a); ` ` `  `        ``System.out.println(Math.sin(b)); ` `    ``} ` `} `

Output:

```0.49999999999999994
0.7071067811865475
0.8660254037844386
1.0
```

Example 2 : To show working of java.lang.Math.sin() method when argument is NaN or infinity.

 `// Java program to demonstrate working ` `// of java.lang.Math.cos() method infinity case ` `import` `java.lang.Math; ` ` `  `public` `class` `GFG { ` `     `  `    ``// Driver code ` `    ``public` `static` `void` `main(String[] args) ` `    ``{ ` `        ``double` `positiveInfinity =  ` `               ``Double.POSITIVE_INFINITY; ` `        ``double` `negativeInfinity =  ` `               ``Double.NEGATIVE_INFINITY; ` `        ``double` `nan = Double.NaN; ` `        ``double` `result; ` ` `  `        ``// Here argument is negative infinity, ` `        ``// output will be NaN ` `        ``result = Math.sin(negativeInfinity); ` `        ``System.out.println(result); ` ` `  `        ``// Here argument is positive infinity, ` `        ``// output will also be NaN ` `        ``result = Math.sin(positiveInfinity); ` `        ``System.out.println(result); ` ` `  `        ``// Here argument is NaN, output will be NaN ` `        ``result = Math.sin(nan); ` `        ``System.out.println(result); ` `    ``} ` `} `

Output:

```NaN
NaN
NaN
```

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