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三角函数式的化简和求值是高考考查的重点内容之一,同学们只有掌握好三角函数题的解题技巧,并将其应用于实践中,通过反复练习,才能提高自己在考试中的答题效率和质量,进而提高解题能力。一、巧妙引入辅助角很多三角函数问题的研究都是基于化简的基础上,而对于三角函数化简的熟练程度则直接影响到整个问题的解决。在对三角函数进行化简的时候通常都会使用到二倍角公式,最后借助辅助角公式完成化简。由此可见,辅助角在解三角函数数学问题中发挥着不
The simplification and evaluation of the trigonometric function is one of the key contents of the college entrance examination test. Only when students master the problem solving skills of trigonometric function problems and apply them to practice, can they improve their skills in exams Answer efficiency and quality, thereby enhancing the ability to solve problems. First, the subtle introduction of auxiliary angle A lot of research on trigonometric functions are based on simplification, and the proficiency of trigonometric function simplification directly affects the solution of the whole problem. In the process of simplifying the trigonometric functions, the double angle formula is usually used, and finally the simplification is completed by means of the auxiliary angle formula. Thus it can be seen that the auxiliary angle does not play a role in solving trigonometric math problems