• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

The Programming Expert

Solving All of Your Programming Headaches

  • HTML
  • JavaScript
  • jQuery
  • PHP
  • Python
  • SAS
  • Ruby
  • About
You are here: Home / Python / Python acos – Find Arccosine and Inverse Cosine of Number

Python acos – Find Arccosine and Inverse Cosine of Number

January 26, 2022 Leave a Comment

To find the arccosine, or inverse cosine, of a number, we can use the Python acos() function from the math module.

import math

math.acos(x)

In Python, we can easily use trigonometric functions with the Python math module. The Python math module allows us to perform trigonometry easily.

With the Python math module, we can find the arccosine of a number easily.

To find the arccosine of a number, we use the math acos() function.

Below is the Python syntax to find the inverse cosine of a number.

import math

math.acos(x)

The input to the acos() function must be a numeric value between -1 and 1. The return value will be a numeric value between 0 and pi radians.

import math

print(math.acos(0.5))
print(math.acos(0))
print(math.acos(-0.75))

#Output: 
1.0471975511965979
1.5707963267948966
2.4188584057763776

Finding the Inverse Cosine of a Number in Python

Arccosine is defined as the inverse of the cosine of a number.

Below, we show that if we pass a number to cos() and then call the Python acos() function, we get back the same number.

import math

print(math.acos(math.cos(math.pi/3)))
print(math.pi/3)

#Output: 
1.0471975511965976
1.0471975511965976

Hopefully this article has been beneficial for you to understand how to use the math acos() function in Python to find the arccosine of a number.

Other Articles You'll Also Like:

  • 1.  Using pandas sample() to Generate a Random Sample of a DataFrame
  • 2.  Using Python to Print Degree Symbol
  • 3.  Calculate Compound Interest in Python
  • 4.  Remove Every Nth Element from List in Python
  • 5.  Using Python to Check If Variable is Not None
  • 6.  PROC MEANS Equivalent in Python
  • 7.  Decrement For Loop with range() in Python
  • 8.  Convert timedelta to Seconds in Python
  • 9.  Union of Lists in Python
  • 10.  Create Empty String Variable in Python

About The Programming Expert

The Programming Expert is a compilation of a programmer’s findings in the world of software development, website creation, and automation of processes.

Programming allows us to create amazing applications which make our work more efficient, repeatable and accurate.

At the end of the day, we want to be able to just push a button and let the code do it’s magic.

You can read more about us on our about page.

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

About The Programming Expert

the programming expert main image

Welcome to The Programming Expert. We are a group of US-based programming professionals who have helped companies build, maintain, and improve everything from simple websites to large-scale projects.

We built The Programming Expert to help you solve your programming problems with useful coding methods and functions in various programming languages.

Search

Learn Coding from Experts on Udemy

Looking to boost your skills and learn how to become a programming expert?

Check out the links below to view Udemy courses for learning to program in the following languages:

Copyright © 2023 · The Programming Expert · About · Privacy Policy