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三角函数由于它的函数名称多 ,函数间的基本关系多 ,所涉及到的公式多 ,因此导致三角解题方法灵活、技巧性强 ,学生不易掌握 .现将三角解题中的常用的方法归纳如下 ,以供复习之用 .1 减元减元是解三角题的最常用的方法之一 ,即减少三角函数的名称 ,减少三角函数中角的个数 ,最
Because of its many function names, the trigonometric functions have many basic relations, and many formulae are involved. As a result, the triangular problem-solving method is flexible and skillful. It is not easy for students to grasp. Now we use the common methods in solving triangle problems. As follows, for review purposes: 1. Decrease Decrease is one of the most common methods used to solve trigonometric problems, that is, to reduce the name of the trigonometric function and reduce the number of corners in the trigonometric function.