Last Updated
：2026/01/03
コサイン
Hiragana
こさいん / よげん
Kanji
余弦
Noun
Japanese Meaning
三角関数の一つで、直角三角形の隣辺の長さを斜辺の長さで割った値、または単位円におけるx座標として定義される関数。余弦。
Easy Japanese Meaning
ちょっかくさんかくけいで、あるかくのとなりのへんをななめのへんでわったあたい。
Chinese (Simplified) Meaning
余弦 / 余弦函数
Chinese (Traditional) Meaning
餘弦 / 三角函數之一，角的鄰邊與斜邊之比
Korean Meaning
삼각함수의 하나 / 직각삼각형에서 각의 인접변과 빗변의 비
Vietnamese Meaning
cosin / hàm cos / cos (ký hiệu)
Tagalog Meaning
kosayn (sa trigonometriya) / rasyo ng katabing panig sa hipotenusa (sa tuwid-anggulong tatsulok)
Sense（1）
(trigonometry) cosine
（ romanization ）
Quizzes for review
See correct answer
コサイン
See correct answer
Let's calculate the value of the cosine, which is one of the trigonometric functions.
Let's calculate the value of the cosine, which is one of the trigonometric functions.
See correct answer
三角関数の一つであるコサインの値を計算しましょう。
Japanese - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen changing entry name
- Users authorized to vote on judging - All Users
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
