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在解有关三角形的应用问题时,经常遇到象限角和方位角的概念,有的学生由于对这两个概念模糊不清,因画不出图形或画错图形而造成结果错误,下面说明象限角和方位角的概念及其应用.
In solving the application of triangles, the concept of quadrant angles and azimuth angles is often encountered. Some students are confused about these two concepts because they can’t draw the graphs or draw the wrong ones, causing the wrong result. The following quadrants are explained. The concept of angle and azimuth and its application.