纵观近几年的高考试题,向量这一知识点已成为高考命题的热点,其工具性也日益凸显,本文通过两道高考题来说明向量在解三角形问题中的作用.例1(2006年高考·上海卷)如图1,当甲船位于A处时获悉,在其正东方向相距20海里的B处有一艘渔船遇险等待营救,甲船立即前往救援,同时把消息告? Looking at the high exam questions in recent years, the vector knowledge point has become a hot topic of the college entrance examination proposition, and its tool is increasingly prominent. This paper uses two college entrance exam questions to illustrate the role of vectors in solving the triangular problem. Example 1 (2006 College Entrance Examination Shanghai Vol.1 As shown in Figure 1, when the A-ship was at A, it was known that there was a fishing boat in the east at a distance of 20 nautical miles from B. It was in distress where it was waiting for rescue. The A-ship immediately went to the rescue and informed the news.