To find the arctangent, or inverse tangent, of a number, we can use the Python **atan()** function from the math module.

```
import math
math.atan(x)
```

In Python, we can easily use trigonometric functions with the Python math module. The Python math module allows us to perform trigonometry easily.

With the Python math module, we can find the arctangent of a number easily.

To find the arctangent of a number, we use the math **atan()** function.

Below is the Python syntax to find the inverse tangent of a number.

```
import math
math.atan(x)
```

The input to the **atan()** function must be a numeric value. The return value will be a numeric value between -pi/2 and pi/2 radians.

```
import math
print(math.atan(5))
print(math.atan(0))
print(math.atan(-3))
#Output:
1.373400766945016
0.0
-1.2490457723982544
```

## Finding the Inverse Tangent of a Number in Python

The **atan()** function is defined as the inverse of the tangent of a number.

Below, we show that if we pass a number to **tan()** and then call the Python **atan()** function, we get back the same number.

```
import math
print(math.atan(math.tan(math.pi/3)))
print(math.pi/3)
#Output:
1.0471975511965976
1.0471975511965976
```

## Find Arc Tangent of the Quotient of Two Arguments with atan2() in Python

Python gives us the ability to find the arctangent of the quotient of two numbers, where the two numbers represents the coordinates of a point (x,y). To find the arctangent of a the quotient of two numbers, we use the math **atan2()** function.

Below is the Python syntax to find the inverse tangent of the quotient of two numbers.

```
import math
math.atan2(x)
```

The inputs to the **atan2()** function must be a numeric values. The return value will be a numeric value between -pi and pi.

```
import math
print(math.atan2(5,1))
print(math.atan2(0,0))
print(math.atan2(-3,7))
#Output:
1.373400766945016
0.0
-0.40489178628508343
```

Hopefully this article has been beneficial for you to understand how to use the math **atan()** function in Python to find the arctangent of a number.