| 三角教学盲点分析 |
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| 引用本文： | 刘夏进.三角教学盲点分析[J].湖州师范学院学报,2001(Z1). |
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| 作者姓名： | 刘夏进 |
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| 作者单位： | 绍兴一中 |
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| 摘 要： | 三角函数不同于普通函数，其自变量表示角度，研究三角函数时要重视角与角的关系．三角函数是“多对一”函数，要注意其对称性和周期性，尤其在利用三角换元解题时，更要注意“多对一”．三角公式有其成立的条件，使用公式时要注意角的范围变化．另外，三角学不是独立的学科，要重视三角与其他学科的联系和应用．
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| 关 键 词： | 盲点 恒等式 多对一 数学思想 |
An Analysis of the Neglected in Trigonometric Teaching |
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| Liu Xiajin.An Analysis of the Neglected in Trigonometric Teaching[J].Journal of Huzhou Teachers College,2001(Z1). |
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| Authors: | Liu Xiajin |
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| Abstract: | The trigonometric function is different from the common function, whose self - variable indicates angels whereas the study of the trigonometric function focuses on the relation between two angels. Attntion should be given to its symmetry and periodicity. Trigonometric formulas usually have their independent condition, the application of which must be related to the change of scopes. Trignometry is not an isolated subject and, it must be studied and applied with other. subjects. |
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| Keywords: | the neglected identical equation multiplicity corresponding to one mathematical thinking |
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