Python3 atan2() Function

Python3 Numbers

Description

atan2()Returns the arctangent of the given X and Y coordinate values.

Syntax

The following is the syntax for the atan2() method:

import math

math.atan2(y, x)

Note:atan2() cannot be accessed directly; you need to import the math module and then call the method via the math static object.

Parameters

• x -- A numeric value.
• y -- A numeric value.

Return Value

Returns the arctangent of the given X and Y coordinate values.

Example

The following example demonstrates the use of the atan2() method:

#!/usr/bin/python3
import math

print ("atan2(-0.50,-0.50) : ",  math.atan2(-0.50,-0.50))
print ("atan2(0.50,0.50) : ",  math.atan2(0.50,0.50))
print ("atan2(5,5) : ",  math.atan2(5,5))
print ("atan2(-10,10) : ",  math.atan2(-10,10))
print ("atan2(10,20) : ",  math.atan2(10,20))

The output after running the above example is:

atan2(-0.50,-0.50) :  -2.356194490192345
atan2(0.50,0.50) :  0.7853981633974483
atan2(5,5) :  0.7853981633974483
atan2(-10,10) :  -0.7853981633974483
atan2(10,20) :  0.4636476090008061

Python3 Numbers