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  2. Python | math.sin () function

Python | math.sin () function

In Python, a math module contains a number of math operations that can be easily accomplished using the module. math.sin() returns the sine of the value passed as an argument. The value passed to this function must be in radians.

Syntax: math.sin (x)

Parameter:
x: value to be passed to sin ()

Returns: Returns the sine of value passed as argument

Code # 1:

# Python code to demonstrate how sin () works

 
# import & quot; math & quot; for math operations

import math 

 

a = math.pi / 6

 
# returns sine pi / 6

print ( "The value of sine of pi / 6 is:" , end = "") 

print (math.sin (a)) 

Output: 

 The value of sine of pi / 6 is: 0.49999999999999994

Code # 2:

# Show Python program
# Graphical view
# sin () function

import math

import matplotlib.pyplot as plt 

 

in_array = [ - 3.14159265 , - 2.57039399 , - 0.28559933 ,

0.28559933 , 2.57039399 ,  3.14159265  ]

 

out_array = []

 

for i in range ( len (in_array)):

out_array.append (math.sin (in_array [i]))

i + = 1

  

 

print ( "in_array:" , in_array) 

print ( "out_array:" , out_array ) 

 
# red for numpy.sin ()

plt.plot (in_array, out_array, color = `red ` , marker = " o " ) 

plt.title ( "math.sin ()" ) 

plt.xlabel ( "X" ) 

plt.ylabel ( "Y" ) 

plt.show () 

Exit:

in_array: [-3.14159265, -2.57039399, -0.2855993 3, 0.28559933, 2.57039399, 3.14159265]

out_array: [-3.5897930298416118e-09, -0.5406408168673427, -0.2817325547837714, 0.2817325547837714, 0.540640816830e2984]