How to Use LaTeX Cosine Symbol

To write the Cosine (cos) in LaTeX, use the LaTeX command \cos. It will add cos symbol in the text.

In this article, we will discuss how to use cosine (cos) in the LaTeX document and its applications in trigonometric calculations and mathematical concepts.

Symbol Overview

Symbol: Cosine

Unicode: U+2207

Type: Trigonometric

Package Requirement: None (built-in symbol)

Argument: None (no additional arguments needed)

LaTeX Command: \cos

Example: cos


The cosine is a built-in symbol available in LaTeX, and one of the fundamental trigonometric functions used in mathematics to related angles to the sides of a right-angled triangle.

It is commonly used to represent cosine functions which is widely used in geometry, physics, and other scientific fields.


The LaTeX command \cos is used to display the cosine symbol.


Let’s understand using cosine symbol in various domains like mathematics, trigonometry with the help of examples.

Using the Cosine Symbol to Calculate the Cosine of an Angle

$\cos (45^\circ) = \frac{\sqrt{2}}{2}$

Output: 👇️

cos(45) = √2/2

In the above example, the cosine symbol is used to calculate the cosine of the angle 45 degrees, which is equal to √2/2.

Using the Cosine Symbol in Trigonometric Equation

$\cos^2(x) + \sin^2(x) = 1$

Output 👇️

cos2(x) + sin2(x) = 1

In the above example, the cosine symbol represents the relationship between the cosine and sine functions in trigonometric.


The cosine symbol has numerous applications in LaTeX documents such as:

  • Calculate the lengths of sides in right-angled triangle.
  • Solve trigonometric equations and identities.


I hope the above article on how to use cosine symbol help you. The cosine symbol (cos) is a fundamental trigonometric functions used extensively in mathematics and widely used in LaTeX documents.

By effiectively use the the cosine symbol in LaTeX documents to convey accurate and precise trigionometric calculations and mathematical concepts.