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正弦定理在物理解题中的应用江苏省姜堰中学李环生正弦定理在物理解题中有着广泛的应用，应引起师生们的高度重视．我们先来研究正弦定理在解三个共点力平衡问题时的应用．如图１所示，设三个力Ｆ；、Ｆ；、Ｆ。作用于Ｐ点而平衡，Ｆ；、Ｆ。之间的夹角为／３，Ｆ。、Ｆｓ...
The application of sine theorem in object comprehension questions The sine theorem of Jiang Jing Middle School Li Huansheng of Jiangsu Province has a wide range of applications in matter comprehension, which should arouse the attention of teachers and students. We first study the application of the sine theorem in the solution of three common point force balance problems. As shown in FIG. 1, three forces F;, F;, F are set. Act on point P and balance, F;, F. The included angle is /3,F. , Fs...