Python - cmath.cos() function

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.

# 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:

# 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)