cosine
意味: A trigonometric function equal to the ratio of the adjacent side to the hypotenuse in a right-angled triangle.
The cosine function, abbreviated as cos, is one of the three primary trigonometric functions alongside sine and tangent. It is fundamental in describing wave motion, oscillations, and circular motion. The cosine rule (or law of cosines) extends its use to non-right-angled triangles, and cosine similarity is widely used in data science to measure how alike two vectors are.
例文
- The cosine of zero degrees is one. 零度的余弦值为一。El coseno de cero grados es uno.0度の余弦は1である。0도의 코사인은 1이다.
- She applied the cosine rule to find the length of the unknown side of the triangle. 她用余弦定理求出了三角形未知边的长度。Aplicó el teorema del coseno para hallar la longitud del lado desconocido del triángulo.彼女は余弦定理を用いて三角形の未知の辺の長さを求めた。그녀는 코사인 법칙을 이용하여 삼각형의 미지의 변의 길이를 구했다.
- The algorithm used cosine similarity to compare document vectors in the search engine. 该算法使用余弦相似度来比较搜索引擎中的文档向量。El algoritmo empleaba la similitud coseno para comparar vectores de documentos en el motor de búsqueda.そのアルゴリズムは検索エンジンにおいて文書ベクトルを比較するのにコサイン類似度を使用した。그 알고리즘은 검색 엔진에서 문서 벡터를 비교하기 위해 코사인 유사도를 사용했다.
発音
使い方ガイド
場面: academic, scientific, professional
トーン: neutral
起源と歴史
From Medieval Latin cosinus, a contraction of complementi sinus (sine of the complement). Coined in the 16th century, building on the Arabic and Indian mathematical tradition of sine.
文化的背景
Era: Modern
Generation: All ages
Social background: Universal
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