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

The Programming Expert

Solving All of Your Programming Headaches

  • Home
  • Learn to Code
    • Python
    • JavaScript
  • Code Snippets
    • HTML
    • JavaScript
    • jQuery
    • PHP
    • Python
    • SAS
    • Ruby
  • About
You are here: Home / PHP / php tan – Find Tangent of Number in Radians Using php tan() Function

php tan – Find Tangent of Number in Radians Using php tan() Function

January 27, 2022 Leave a Comment

To find the tangent of a number (in radians), we can use the php tan() function.

tan(x)

In php, we can easily use trigonometric functions from the collection of php math functions. These php math functions allow us to perform trigonometry easily.

To find the tangent of a number, in radians, we use the php tan() function.

Below is the php syntax to find the tangent of a number.

tan(x)

The input to the tan() function must be a float. The return value will be a float between -infinity and infinity.

echo tan(pi()/3); // 1.7320508075688767
echo tan(0); // 0.0
echo tan(pi()/2); // 1.633123935319537e+16

Converting Degrees to Radians for Input into tan()

The tan() function takes a number in radians as input. If your data is in degrees, you will need to convert the values to radians.

To convert degrees to radians, we can use the php deg2rad() function to convert the value to radians and then pass it to the tan() function.

echo tan(deg2rad(60)); // 1.7320508075688767
echo tan(deg2rad(0));  // 0.0
echo tan(deg2rad(90)); // 1.633123935319537e+16

Finding the Inverse Tangent of a Number in php

With php, we can also find the inverses of the common trigonometric functions. The atan() function allows us to find the inverse of the tangent of a number.

Below, we show that if we pass a number to tan() and then call the php atan() function, we get back the same number.

echo atan(tan(pi()/3)); // 1.0471975511965976
echo pi()/3; // 1.0471975511965976

Finding the Cotangent of a Number in php

To find the cotangent of a number, we can divide 1 by the tangent of the number.

We can find the cotangent of a number easily with the php tan() function. You can see how to find the cosecant of a number in the following php code.

echo 1/sin(pi()/3); // 0.577350269189626

Hopefully this article has been beneficial for you to understand how to use the tan() function in php to find the tangent of a number.

Other Articles You'll Also Like:

  • 1.  php acos – Find Arccosine and Inverse Cosine of Number
  • 2.  Check if String Starts with Given String in php with str_starts_with()
  • 3.  php array_intersect() – Find Intersection of Two or More Arrays in php
  • 4.  php range() – Create Array of Elements Within Given Range
  • 5.  Remove First Character from String Using php
  • 6.  php acosh – Find Hyperbolic Arccosine of Number Using acosh() Function
  • 7.  How to Reverse Array in php Without a Function or Other Variables
  • 8.  php min – Find Minimum Value of Array in php
  • 9.  How to Add Items to Array in php
  • 10.  php sleep() Function – Pause Execution of Code in php

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