以下三条策略可以化解解斜三角形问题中的部分难点.1.关键知识点:正弦定理,余弦定理,三角形面积公式,三角形内角和定理是解决该部分问题的主要知识点,同学们要熟练掌握这些知识,并灵活运用.2.转化思想:若要解一个三角形,必须知道这个三角形的三条边,或所有边和角中的至少三个元素,在解三角形 The following three strategies can solve some of the difficulties in solving the problem of beveled triangles.1 The key points of knowledge: the sine, cosine, triangle area, triangle interior and the theorem are the main points to solve the problem, students should master these Knowledge, and flexible use .2 Transformation thinking: To solve a triangle, you must know the three sides of the triangle, or all of the edges and corners of at least three elements in the solution of the triangle