Python – cmath.sin() function

cmath is Python built-in module that is used for complex number mathematics. cmath module has a method sin() that returns sine of the complex number passed to it.

Syntax: cmath.sin(Z)

Parameter: It requires only one parameter i.e the number for which sine needs to be calculated.

Return: Returns a complex number that is the sine of the number passed.

Example 1: 

Python3

# Import the Library
import cmath

# Printing the result
print (cmath.sin(5 + 3j))

Output:

(-9.654125476854839+2.841692295606352j)

Example 2: In this example real number is passed but the returned result is still a complex number.

Python3

# Import the Library
import cmath

# Printing the result
print (cmath.sin(1))

Output:

(0.8414709848078965+0j)

Example 3: In this example no argument is passed in this case TypeError will be thrown

Python3

# Import the Library
import cmath

# Printing the result
print (cmath.sin())

Output:

TypeError: sin() takes exactly one argument (0 given)