# Java Math atan() Method ## Java Math Class

Java Math class provides several methods to perform several operations on math calculations like max(), min(), sin(), cos(), round(), ceil(), floor(), abs() etc.
The java.lang.Math class contains various methods for performing basic numeric operations

Here, in the page we will discuss about the atan() Method in java.

## Java Math atan() Method :

The arc tangent of the given value is returned by the Java Math atan() method.
The inverse of the tangent function is the arc tangent.

Note:If the argument is zero, the result will also be zero with the same sign.

### Syntax  :

```public static double atan(double a)
```

clear() Function in ArrayList

clone() Function in ArrayList

### Example 1 for Positive Numbers :

Run

```public class Main{
public static void main(String[] args) {

//declaring variables
double x = 45.0;
double y = 30.0;
double z = 60.0;
double e = 0.0;

//inpitting a positive value
//outputing a positive value

System.out.println("Math.atan(" + x + ") = " + Math.atan(x));
System.out.println("Math.atan(" + y + ") = " + Math.atan(y));
System.out.println("Math.atan(" + z + ") = " + Math.atan(z));
System.out.println("Math.atan(" + e + ") = " + Math.atan(e));
}
}

```

### Output :

```Math.atan(45.0) = 1.5485777614681775
Math.atan(30.0) = 1.5374753309166493
Math.atan(-60.0) = -1.554131203080956
Math.atan(-0.0) = -0.P```

### Example 2 for Negative Numbers :

Run
```public class Main{
public static void main(String[] args) {

//declaring negative variables
double x = -50.0;
double y = -75.0;
double z = -55.0;
double e = -0.0;

//inpitting a negative value
//outputing a negative value
System.out.println("Math.atan(" + x + ") = " + Math.atan(x));
System.out.println("Math.atan(" + y + ") = " + Math.atan(y));
System.out.println("Math.atan(" + z + ") = " + Math.atan(z));
System.out.println("Math.atan(" + e + ") = " + Math.atan(e));
}
}

```

### Output :

```Math.atan(-50.0) = -1.550798992821746
Math.atan(-75.0) = -1.557463783500751
Math.atan(-55.0) = -1.5526165117219184
Math.atan(-0.0) = -0.0```

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