- Python Basics
- Python - Home
- Python - Overview
- Python - History
- Python - Features
- Python vs C++
- Python - Hello World Program
- Python - Application Areas
- Python - Interpreter
- Python - Environment Setup
- Python - Virtual Environment
- Python - Basic Syntax
- Python - Variables
- Python - Data Types
- Python - Type Casting
- Python - Unicode System
- Python - Literals
- Python - Operators
- Python - Arithmetic Operators
- Python - Comparison Operators
- Python - Assignment Operators
- Python - Logical Operators
- Python - Bitwise Operators
- Python - Membership Operators
- Python - Identity Operators
- Python - Operator Precedence
- Python - Comments
- Python - User Input
- Python - Numbers
- Python - Booleans
- Python Control Statements
- Python - Control Flow
- Python - Decision Making
- Python - If Statement
- Python - If else
- Python - Nested If
- Python - Match-Case Statement
- Python - Loops
- Python - for Loops
- Python - for-else Loops
- Python - While Loops
- Python - break Statement
- Python - continue Statement
- Python - pass Statement
- Python - Nested Loops
- Python Functions & Modules
- Python - Functions
- Python - Default Arguments
- Python - Keyword Arguments
- Python - Keyword-Only Arguments
- Python - Positional Arguments
- Python - Positional-Only Arguments
- Python - Arbitrary Arguments
- Python - Variables Scope
- Python - Function Annotations
- Python - Modules
- Python - Built in Functions
- Python Strings
- Python - Strings
- Python - Slicing Strings
- Python - Modify Strings
- Python - String Concatenation
- Python - String Formatting
- Python - Escape Characters
- Python - String Methods
- Python - String Exercises
- Python Lists
- Python - Lists
- Python - Access List Items
- Python - Change List Items
- Python - Add List Items
- Python - Remove List Items
- Python - Loop Lists
- Python - List Comprehension
- Python - Sort Lists
- Python - Copy Lists
- Python - Join Lists
- Python - List Methods
- Python - List Exercises
- Python Tuples
- Python - Tuples
- Python - Access Tuple Items
- Python - Update Tuples
- Python - Unpack Tuples
- Python - Loop Tuples
- Python - Join Tuples
- Python - Tuple Methods
- Python - Tuple Exercises
- Python Sets
- Python - Sets
- Python - Access Set Items
- Python - Add Set Items
- Python - Remove Set Items
- Python - Loop Sets
- Python - Join Sets
- Python - Copy Sets
- Python - Set Operators
- Python - Set Methods
- Python - Set Exercises
- Python Dictionaries
- Python - Dictionaries
- Python - Access Dictionary Items
- Python - Change Dictionary Items
- Python - Add Dictionary Items
- Python - Remove Dictionary Items
- Python - Dictionary View Objects
- Python - Loop Dictionaries
- Python - Copy Dictionaries
- Python - Nested Dictionaries
- Python - Dictionary Methods
- Python - Dictionary Exercises
- Python Arrays
- Python - Arrays
- Python - Access Array Items
- Python - Add Array Items
- Python - Remove Array Items
- Python - Loop Arrays
- Python - Copy Arrays
- Python - Reverse Arrays
- Python - Sort Arrays
- Python - Join Arrays
- Python - Array Methods
- Python - Array Exercises
- Python File Handling
- Python - File Handling
- Python - Write to File
- Python - Read Files
- Python - Renaming and Deleting Files
- Python - Directories
- Python - File Methods
- Python - OS File/Directory Methods
- Object Oriented Programming
- Python - OOPs Concepts
- Python - Object & Classes
- Python - Class Attributes
- Python - Class Methods
- Python - Static Methods
- Python - Constructors
- Python - Access Modifiers
- Python - Inheritance
- Python - Polymorphism
- Python - Method Overriding
- Python - Method Overloading
- Python - Dynamic Binding
- Python - Dynamic Typing
- Python - Abstraction
- Python - Encapsulation
- Python - Interfaces
- Python - Packages
- Python - Inner Classes
- Python - Anonymous Class and Objects
- Python - Singleton Class
- Python - Wrapper Classes
- Python - Enums
- Python - Reflection
- Python Errors & Exceptions
- Python - Syntax Errors
- Python - Exceptions
- Python - try-except Block
- Python - try-finally Block
- Python - Raising Exceptions
- Python - Exception Chaining
- Python - Nested try Block
- Python - User-defined Exception
- Python - Logging
- Python - Assertions
- Python - Built-in Exceptions
- Python Multithreading
- Python - Multithreading
- Python - Thread Life Cycle
- Python - Creating a Thread
- Python - Starting a Thread
- Python - Joining Threads
- Python - Naming Thread
- Python - Thread Scheduling
- Python - Thread Pools
- Python - Main Thread
- Python - Thread Priority
- Python - Daemon Threads
- Python - Synchronizing Threads
- Python Synchronization
- Python - Inter-thread Communication
- Python - Thread Deadlock
- Python - Interrupting a Thread
- Python Networking
- Python - Networking
- Python - Socket Programming
- Python - URL Processing
- Python - Generics
- Python Libraries
- NumPy Tutorial
- Pandas Tutorial
- SciPy Tutorial
- Matplotlib Tutorial
- Django Tutorial
- OpenCV Tutorial
- Python Miscellenous
- Python - Date & Time
- Python - Maths
- Python - Iterators
- Python - Generators
- Python - Closures
- Python - Decorators
- Python - Recursion
- Python - Reg Expressions
- Python - PIP
- Python - Database Access
- Python - Weak References
- Python - Serialization
- Python - Templating
- Python - Output Formatting
- Python - Performance Measurement
- Python - Data Compression
- Python - CGI Programming
- Python - XML Processing
- Python - GUI Programming
- Python - Command-Line Arguments
- Python - Docstrings
- Python - JSON
- Python - Sending Email
- Python - Further Extensions
- Python - Tools/Utilities
- Python - GUIs
- Python Useful Resources
- Python Compiler
- NumPy Compiler
- Matplotlib Compiler
- SciPy Compiler
- Python - Programming Examples
- Python - Quick Guide
- Python - Useful Resources
- Python - Discussion
Python math.sin() Method
The Python math.sin() method is used to calculate the sine value of an angle in radians. Mathematically, the sine function is defined as the ratio of the opposite side of the given angle to the hypotenuse (the longest side of the triangle) in a right-angled triangle.
The most commonly used sine values are of angles 0, 30, 45, 60 and 90 degrees. The sine function retrieves the values between -1 to 1. This method raises a TypeError whenever we pass anything but a floating-point number as an argument to it.
Note − This function is not accessible directly, so we need to import math module and then we need to call this function using math static object.
Syntax
Following is the syntax of Python math.sin() method −
math.sin(x)
Parameters
x − This must be a numeric value.
Return Value
This method returns a numeric value between -1 and 1, which represents the sine of the angle.
Example
The following example shows the usage of the Python math.sin() method. Here, we are trying to pass the standard sine angles and find their trigonometric sine ratios using this method.
import math print ("sin(3) : ", math.sin(3)) print ("sin(-3) : ", math.sin(-3)) print ("sin(0) : ", math.sin(0)) print ("sin(math.pi) : ", math.sin(math.pi)) print ("sin(math.pi/2) : ", math.sin(math.pi/2))
When we run above program, it produces following result −
sin(3) : 0.14112000806 sin(-3) : -0.14112000806 sin(0) : 0.0 sin(math.pi) : 1.22464679915e-16 sin(math.pi/2) : 1.0
Example
Not just the standard angles, this method can also be used to find the sine ratios for non-standard angles.
In this example, we are creating multiple number objects that hold non-standard angles in radians. These values are passed as arguments to this method in order to find their resultant sine ratios.
import math # If the sine angle is pi x = 5.48 sine = math.sin(x) print("The sine value of x is:", sine) # If the sine angle is pi/2 x = 1.34 sine = math.sin(x) print("The sine value of x is:", sine) # If the sine angle is 0 x = 0.78 sine = math.sin(x) print("The sine value of x is:", sine)
While executing the above code we get the following output −
The sine value of x is: -0.7195716728205075 The sine value of x is: 0.9734845416953194 The sine value of x is: 0.7032794192004103
Example
Even though complex numbers are still considered as numbers, this method only accepts real numbers as arguments.
Let us look at scenario where we pass complex numbers as arguments to the sin() method. The method raises a TypeError.
import math # If the sine angle is a complex number x = 12-11j sine = math.sin(x) print("The sine value of x is:", sine)
Following is an output of the above code −
Traceback (most recent call last): File "C:\Users\Lenovo\Desktop\untitled.py", line 4, in <module> sine = math.sin(x) TypeError: must be real number, not complex
Example
We can use the math.radians() method to convert an angle in degrees and pass it as an argument to the sin() method.
In the following example, we are creating a number object that holds a sine angle in degrees. Since, the sin() method takes arguments in radians, we can call the radians() method on this object to convert it into the corresponding radian value. We will then pass this radian value as an argument to this method and find its sine ratio.
import math # Take the sine angle in degrees x = 60 # Convert it into radians using math.radians() function rad = math.radians(x) # Find the sine value using sin() method sine = math.sin(rad) # Display the sine ratio print("The sine value of x is:", sine)
Output of the above code is as follows −
The sine value of x is: 0.8660254037844386