选择合适的素材,恰当地考查以数学知识作为工具解决有关实际应用问题,是我们陕西省新课标高考试题考查的一个重要方向,应引起足够的重视。为此,我特选取以下未考查过的几个类型加以解析(已经考过的有:线性规划的实际应用、数列与二次函数的实际应用、抛物线的实际应用)。一、考查三角函数的实际应用例1.如图1,一个半径为10m的水轮按逆时针方向每分钟转 Select the appropriate material to properly examine the use of mathematical knowledge as a tool to solve practical problems, is our Shaanxi Province, the new course exams exams an important direction should be given enough attention. To this end, I choose to take the following types of unexamined to be resolved (have been over the test are: the practical application of linear programming, the practical application of series and quadratic functions, the practical application of parabola). First, to examine the practical application of trigonometric functions 1. As shown in Figure 1, a radius of 10m water wheel counterclockwise per minute turn