Last Updated
：2025/11/19
cosine
IPA(Pronunciation)
（ plural ）
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(trigonometry) In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos
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cosine
To solve the triangle, she used the cosine of the acute angle to find the length of the adjacent side.
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To solve the triangle, she used the cosine of the acute angle to find the length of the adjacent side.
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