学习了锐角三角函数,将直角三角形中的边和角建立了有机的联系,其实就是直角三角形中边与边的比例关系.要树立自觉运用这个关系解答问题的意识,才能使学习这部分知识感到轻松、自如.下面举例说明. Learning the acute trigonometric function, the right triangle and the corner of the triangle to establish an organic link, in fact, is the right triangle and the side of the edge of the ratio to establish the conscious use of this relationship to answer the question of awareness, in order to make learning this part of the sense of knowledge Easy and comfortable. Here’s an example.