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解答情景问题的策略是:利用数学知识去分析、抽象、概括,构建数学模型,从而将实际情景问题转化为纯数学问题.下面举例加以解析,供同学们参考.例1某市在“创卫”过程中,要在东西方向M、N两地之间修建一条道路.如图1,已知C点周围180m范围内为文物保护区,在MN上点A处测得C在A的北偏东60°方向上,从A向东走500m到达B处,测得C在B的北偏西45°方向上.问:
The strategy to solve the scenario problem is to use mathematical knowledge to analyze, abstract, summarize and construct the mathematical model so that the actual scenario problem can be transformed into a purely mathematical problem. The following examples are given for analysis by students for reference. Wei "process, to build a road in the east-west direction between M, N. As shown in Figure 1, known within 180m around the C point for the cultural relics protection zone, the MN at the point A measured C in A In the north-easterly direction of 60 °, go 500 m from A to B and measure C in the direction of 45 ° north-west of B. Q: