[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-07-26 UTC。"],[],["The `cos()` method computes the cosine of a numerical input, which must be in radians. It returns a numerical value representing the cosine. Input angles can be provided directly in radians or converted from degrees using the formula: `degrees * (π/180)`. The provided examples illustrate using `cos()` with values like 0, π/2, and π, and demonstrates calculating the cosine of 45 degrees after converting it to radians.\n"]]