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Python – cmath.cos() function

  • Last Updated : 28 May, 2020

cMath module contains a number of functions which is used for mathematical operations for complex numbers. The cmath.cos() function returns the cosine value of a complex number. The value passed in this function can be int, float, and complex numbers.

Syntax: cmath.cos(x)

Parameter:This method accepts only single parameters.

  • x :This parameter is the value to be passed to cos()

Returns:This function returns the cosine value of a complex number.

Below examples illustrate the use of above function:

Example #1 : In this example we can see that by using cmath.cos() method, we are able to get the values of cosine by passing any value to it.

Python3




# Python code to implement
# the cos()function
        
# importing "cmath"
# for mathematical operations  
import cmath 
    
# using cmath.cos() method 
val = cmath.cos(3
    
print(val)

Output:

(-0.9899924966004454-0j)

Example 2:



Python3




# Python code to implement
# the cos()function
        
# importing "cmath"
# for mathematical operations  
import cmath 
    
# using cmath.cos() method 
val = cmath.cos(2 + 5j
    
print(val)

Output:

(-30.88223531891674-67.47278844058752j)

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