解直角三角形一章是初中几何学习的重点,也是历年中考命题的重要考点.锐角三角函数的概念,直角三角形中的边、角间的关系,简单的解直角三角形等知识的考点多以填空题、选择题的形式出现在中考试卷中,而运用解直角三角形的知识解决实际问题的大题或综合题是近年来中考的热点题型 The solution of the right angle triangle chapter is the focus of junior high school geometry learning, and is also an important test point for the prosperous topic of the annual examination. The concept of acute angle trigonometric function, the relationship between the edges and angles in the right triangle, the simple answer to the right angle triangle and other knowledge test center to fill in the blank The form of the multiple-choice questions appeared in the examination papers, and the use of solving the right-angled triangle to solve practical problems is a hot topic in recent years.