论文部分内容阅读
要想学好锐角三角函数,必须理解并掌握以下四点: 一、正确理解锐角三角函数的定义必须清楚定义是在直角三角形中给出的。
In order to learn the acute angle trigonometric functions, we must understand and grasp the following four points: First, the correct understanding of the definition of the acute angle The definition of the trigonometric function must be clearly defined in the right triangle.