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Vocabulary Entry
cosine
|noun
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N
noun
A mathematical function that represents the cosine of an angle, defined as the ratio of the length of the adjacent side to the hypotenuse in a right triangle.
Example Sentences
"In trigonometry, the cosine of a 30-degree angle is √3/2."
"To find the height of the building, you can use the cosine function."
"The cosine graph oscillates between -1 and 1."