在高考理综物理试题中,常涉及有关带电粒子在匀强磁场中运动的问题,这既是教学中的难点,也是近年高考命题的热点。在解决这类问题时,需利用正弦定理、余弦定理等数学知识,其目的在于考查学生运用数学工具处理物理问题的能力。下面以近两年的高考题为例,举例说明其解法,供参考。 Physical examination in the college entrance examination physics, often involving the movement of charged particles in uniform magnetic field, which is both difficult in teaching, but also the hot topic in recent years college entrance examination. In solving such problems, the need to use the sine theory, cosine theorem and other mathematical knowledge, its purpose is to examine the ability of students to use mathematical tools to deal with physical problems. The following two years of college entrance examination questions, for example, illustrate its solution, for reference.