cosine Definition
a trigonometric function that is equal to the ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse.
Using cosine: Examples
Take a moment to familiarize yourself with how "cosine" can be used in various situations through the following examples!
Example
The cosine of 30 degrees is 0.866.
Example
The cosine function is used in mathematics and physics to describe periodic phenomena such as sound waves and electromagnetic waves.
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Summary: cosine in Brief
The term 'cosine' [ˈkɒsʌɪn] refers to a mathematical function that describes the ratio of the adjacent side to the hypotenuse of a right-angled triangle. It is used in various fields, including mathematics and physics, to describe periodic phenomena.
