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Math Definitions - Letter C


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Cosine

Definition of Cosine



Cosine is one of the trigonometric ratios. You can find the cosine of an angle in a right angled triangle as follows:

Divide the length of the side adjacent to the angle by the length of the hypotenuse of the triangle.

We use \(\cos \theta\) as short hand for the cosine of the angle \(\theta\).

So, the formula is:

\( \cos\theta = \dfrac{\text{adjacent}}{\text{hypotenuse}}.\)
Definition of Cosine

Description

The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.



Audience

Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter C

Author: Subject Coach
Added on: 6th Feb 2018

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