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一份理想的高考试题应覆盖所有知识点,但在有限的24道数学试题中、有限的两个小时内不可能面面俱到。三角函数是高考必考的知识点,用解三角形的思路、方法和策略解决平面四边形有关问题既是创新点也是热点。考纲明确“能够运用正弦定理、余弦定理等知识和方法解决一些与测量和几何计算有关的实际问题。”因为这就是在知识交汇点命题,更是体现命题原则:能力立意和创新应用意识。请看2015年高考一卷真题:
An ideal college entrance exam should cover all points of knowledge, but in a limited 24 math test, it is impossible to cover everything for a limited two hours. Trigonometric function is the knowledge of the college entrance examination will be necessary to solve the triangular ideas, methods and strategies to solve the problem of planar quadrilateral is both innovative and hot. Syllabus “can use some knowledge and methods such as sine and cosine theorems to solve some practical problems related to measurement and geometry calculation.” Because this is the proposition at the intersection of knowledge and the principle of proposition: the ability to conception and innovative application of consciousness . Take a look at the 2015 college entrance examination Zhenti: