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直角三角形中边和角间的关系,在初中数学第五册《解直角三角形》一节中已学习,应用极为广泛.在某些数学的例题习题中,虽然题目中并没有直接提到它与直角三角形的关系,但如果我们从给出的条件中仔细地分析一下,有时可发现它与直角三角形却有着内在的联系,从而使我们能巧妙地运用直角三角形中边和角之间的关系,既直观又灵活地得到解题的方法,使学生产生浓厚的学习兴趣,提高学生学习的自觉性和积极性,同时又加强了三角、代数、
The relationship between the sides and angles of a right triangle is studied in the section entitled “Solving the Right Triangle” in the fifth volume of junior middle school mathematics, and its application is extremely extensive. In some mathematics examples, although the title does not mention it directly, The relationship of right triangles, but if we carefully analyze the conditions given, we can sometimes find that it is intrinsically linked to the right triangle, so that we can skillfully use the relationship between the sides and the angles of the right triangle. The method of solving problems is intuitive and flexible, so that students have a strong interest in learning and improve students’ consciousness and enthusiasm for learning. At the same time, they have strengthened the triangle, algebra, and