论文部分内容阅读
１ 一道高考题引出的思索与推广１９９６年普通高等学校招生全国统一考试试题数学（理工农医类）中的填空题第１８题为：ｔｇ２０°＋ｔｇ４０°＋３ｔｇ２０°·ｔｇ４０°的值是 ［１］该题标准答案为３，与原式中ｔｇ２０°·ｔｇ４０°的系数密切相关，这是偶然的巧?
1 The question and promotion of a college entrance examination question The fill-in questions in the 1996 National Unified Higher Education Admissions National Unified Examination Questions Mathematics (Science and Technology Agriculture and Medicine) Question 18: tg20°+tg40°+3tg20°·tg40° is [1] The standard answer to this question is 3, which is closely related to the coefficient of tg20°·tg40° in the original formula. Is this accidental?