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同一个三角方程由于采用了不同的解法,求出的通值式在形式上也往往不一致。如何准确而又简捷地制定三角方程通值式的等效性,是教学过程中需要解决的一个問題。教师如果能通过課內外的教学活动,指导学生从根本上了解三角方程通值式所以有不同形式的原因,灵活地掌握通值式的几个基本变換和检查通值式等效性的几个最基本的方法,这对扩大和加深学生的知識領域,培养学生的钻研精神,滿足学生的求知慾望来說,都是很有好处和很有必要的。关于三角方程通值式等效性問題,在“数学教学”,“数学通报”等有关杂志中进行过不少討論和研究,很多地方值得参
Because the same trigonometric equation uses different solutions, the calculated pass-value formula is often inconsistent in form. How to formulate the equivalence of trigonometric equations accurately and simply is a problem that needs to be solved in the teaching process. If teachers can guide students through the teaching activities in and out of class to fundamentally understand the trigonometric equations, they have different forms of reasons. They can flexibly master several basic conversions of pass-through and check the equivalence of pass-value equivalence. The most basic methods are very beneficial and necessary for expanding and deepening the students’ knowledge fields, cultivating students’ spirit of study, and satisfying students’ desire for knowledge. Regarding the equivalence of triangular equations in terms of equivalence, many discussions and researches have been conducted in “mathematics teaching” and “major bulletin” magazines. Many places are worth participating in.