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三角函数是高中数学的重要内容,也是高考的必考知识点,但一般要求不高.作为基本初等函数之一,三角函数一直是数学竞赛和自主招生考试的热点内容,主要考查:三角函数的定义域、值域和有界性,三角函数的奇偶性、单调性、周期性,三角函数的图象的变换,三角恒等变换与三角不等式,与三角函数有关的最值问题,等等.进入新课程以后,高考已经逐步抛弃了对复杂三角变换和特殊技巧的考查.与此相反,作为一种选
Trigonometric function is an important part of high school mathematics, but also the necessary knowledge of college entrance examination, but the general requirement is not high.As one of the basic elementary functions, the trigonometric function has always been a hot topic in mathematics competition and self-enrollment examination, the main test: trigonometric functions Domain, range and boundedness, trigonometry of trigonometric functions, monotonicity, periodicity, transformation of images of trigonometric functions, triangular isomorphisms and trigonometric inequalities, the most valued problems associated with trigonometric functions, and so on. After entering the new curriculum, college entrance examination has gradually abandoned the test of complex trigonometry transformation and special skills.On the contrary, as a choice