论文部分内容阅读
熟练掌握几种三角函数间的关系并灵活运用,常能使一些数学问题简捷获解.现略举数例.教科书中三角函数间的关系有以下几种表现形式,它们均可由三角函数定义导出.
Proficient in the relationship between several trigonometric functions and flexible use, often can make some simple mathematical problems solved. Now a few examples. The relationship between the trigonometric functions in textbooks have the following manifestations, they can be derived from the definition of trigonometric functions .