我们知道,三角函数是中学数学的一个重要内容,而且是高考数学中的一个考察热点,这部分内容中学一般放在高二下学期讲授;就具体内容而言两个定理并不难,推理过程也不复杂,我们物理学工作者都知道物理思维与结果都是通过数学表达式来进行表述的,因而我们也可以把正弦定理与余弦定理应用到物理学教学及学生解题中去。在以往的教学中,我们经常会发现学生在学习力后特别是力的合成与分解后,学生在求一个力的最小值、最大值往往有 We know that the trigonometric function is an important part of high school mathematics, but also a hot spot in the mathematics of college entrance examination, this part of the content is generally taught in the second semester; the specific content of the two theorems is not difficult, the reasoning process Uncomplicated, our physicists know that both physical thinking and the result are expressed through mathematical expressions, so we can also apply the sine and cosine theorems to physics teaching and student problem solving. In the past teaching, we often found that students in the learning ability, especially after the synthesis and decomposition of force, students seeking a minimum force, the maximum often have