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达尔文说:“最有价值的知识,就是关于方法的知识.”我们应重视数学思想方法的学习与运用.下面我们将“锐角三角函数”中的数学思想方法归纳如下.一、方程思想例1州政府投资3个亿拟建的恩施民族高中,位于北纬31°,教学楼窗户朝南,窗户高度为hm,此地一年的冬至这一天的正午时刻太阳光与地面的夹角最小为α,夏至这一天的正午时刻太阳光与地面的夹角最大为β.若你是一名设计师,请你为教学楼的窗户设计一个直角形遮阳蓬BCD,要求它既能最大限度地遮挡夏天炎热的阳光,又能最大限度
Darwin said: “The most valuable knowledge is the knowledge about the method. ” We should pay attention to the study and application of the method of mathematical thought.We will summarize the mathematical thought and method in the "acute angle trigonometric function The idea of the equation Example 1 State government invested 3 billion in Enshi ethnic high school, located at latitude 31 °, teaching building window facing south, the window height hm, here one year's winter solstice at noon time of day angle between the sun and the ground The minimum is α, the angle between the sunlight and the ground is no more than β at the noon of the summer solstice. If you are a designer, please design a right-angle awning BCD for the windows of the teaching building, To block the hot summer sun, but also the maximum