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Python ATAN2

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The Python ATAN2 function is one of the Python Math function which is used to returns the angle (in radius) from the X -Axis to the specified point (y, x). In this article we will show you, How to use ATAN2() function in Python Programming language with example.

TIP: Please refer Python TAN Function article to understand the Tangent Function.

Syntax of a Python ATan2 Function

The basic syntax of the ATAN2 Function in Python Programming Language is as shown below:

Math.atan2(y, x);
  • X: It can be a number or a valid numerical expression which represent Cartesian X – Coordinate.
  • Y: It can be a number or a valid numerical expression which represent Cartesian Y – Coordinate.

HINT: If we pass any non numeric values to the ATAN2() Function then, this function will return TypeError as output

Python ATAN2 Function Example

The ATAN2 Function in Python Language returns the angle (in radius) from the X -Axis to the specified point (y, x). In this example, We are going to find the same with different data types and display the output

PYTHON CODE

# Python ATAN2 Function

import math

Tup = (1, 2, 3, -4 , 5)
Lis = [-1, 2, -3.5, -4 , 5]

print('Tangent value of Positive Number = %.2f' %math.atan2(2, 4))
print('Tangent value of Negative Number = %.2f' %math.atan2(-1, 6))

print('Tangent value of Tuple Item = %.2f' %math.atan2(Tup[3], Tup[2]))
print('Tangent value of List Item = %.2f' %math.atan2(Lis[2], Lis[4]))

print('Tangent value of Multiple Number = %.2f' %math.atan2(2 + 7 - 4, 9-5))

print('Tangent value of String Number = %.2f', math.atan2('Hello', 'Python'))

OUTPUT

Python ATAN2 Function

ANALYSIS

First, We declared Python List and Tuple with some random values. Next, We used the ATAN2() Function directly on both the Positive integer and negative integer. Following statements will find the angle (in radius) for the corresponding values.

print('Tangent value of Positive Number = %.2f' %math.atan2(2, 4))
print('Tangent value of Negative Number = %.2f' %math.atan2(-1, 6))

Next, We used the ATAN2() Function on Python Tuple and List items. If you observe the above screenshot, ATAN2() function is working perfectly on them.

print('Tangent value of Tuple Item = %.2f' %math.atan2(Tup[3], Tup[2]))
print('Tangent value of List Item = %.2f' %math.atan2(Lis[2], Lis[4]))

Next, We used the ATAN2() Function directly on multiple values.

print('Tangent value of Multiple Number = %.2f' %math.atan2(2 + 7 - 4, 9-5))

Within the last statement, We tried ATAN2() Function on String value. As we said before, this will return TypeError as output

print('Tangent value of String Number = %.2f', math.atan2('Hello', 'Python'))

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