Cosine

usgb/ˈkəʊsaɪn/
noun

In mathematics, it is a function that indicates the ratio of the length of the side adjacent to an angle to the length of the hypotenuse in a right triangle.

Let's find the cosine of that angle for solving the triangle.
Visual representation of "cosine" - In mathematics, it is a function that indicates the ratio of the length of the side adjacent to an angle to the length of the hypotenuse in a right triangle.

Often appears as...

  • cosine function
  • cosine value

Usage tips

Academic

Definition 1 of 1
Visual representation of "cosine"
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Math Specific

Used mainly in mathematical context, often in trigonometry or geometry lessons.

Illustration for Math Specific
The cosine of 30 degrees is equal to the square root of 3 divided by 2.
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Not an Average Word

Uncommon in everyday language, mostly found in academic or technical settings.

Illustration for Not an Average Word
In physics class, we learned that cosine helps determine the components of a vector.
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Pronunciation Clue

Pronounced as 'koh-sine', may be mistaken for 'cosign' which is a different word.

Illustration for Pronunciation Clue
To solve the problem, first calculate the cosine, making sure not to confuse it with cosign.
Visual representation of the word "Cosine"

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