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有一类问题是台风、噪音对某一对象的影响问题,这类问题一般涉及两个方面,我们不妨命名为被影响对象及影响源.解的一般方法是: ①画出符合题意的图形,把实际问题转化为数学问题;②构造直角三角形,再解直角三角形.下面举例说明.
One type of problem is the impact of typhoon and noise on a certain object. This type of problem generally involves two aspects. We may name it as the affected object and the source of influence. The general method of solution is: 1Draw a figure that matches the meaning of the problem. Convert the actual problem into a mathematical problem; 2 Construct a right-angled triangle and solve a right-angled triangle. The following example illustrates.