论文部分内容阅读
三角函数是高中所学基本的初等函授之一,它是重要的数学运算工具,在中学数学的各个分科中都有广泛的应用。它是高考对基础知识和基本技能考查的重要内容之一。纵观近三年的高考,就三角函授而言,其热点有两个:一个是三角函数的性质(单调性、奇偶性、周期性、定义域、值域、最值等)和图象变换;另一个则是三角函授式的化简、求值、证明。三角函数的化简、求值、证明,主要考查公式的灵活运用、变换能力,一般运用和角与差角、倍角公式,主要采用以下一些策略。常值代换、项的分拆与角的
Trigonometric function is one of the basic elementary correspondence in high school. It is an important math operation tool and has been widely used in all branches of high school mathematics. It is the college entrance examination of basic knowledge and basic skills one of the important content. Throughout the past three years of college entrance examination, as far as triangular correspondence is concerned, there are two hot topics: one is the nature of trigonometric functions (monotonicity, parity, periodicity, domain, range, value, etc.) and image transformation ; The other is a triangular correspondence simplification, evaluation, proof. The simplification, evaluation and demonstration of trigonometric functions, the flexible application of the main test formulas, the transformation ability, the general application of angle and difference angles, and the angle multiplier formula mainly adopt the following strategies. Substitution of constant value, item break-up and angle