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在高中数学中,“同角三角函数基本关系式”是三角函数重要的知识点,其常见应用有三种:(1)知某个函数值,求其余各函数值;(2)化简三角函数关系式;(3)证明三角恒等式。通过其常见应用可知,这类型题目通常都是以解答题的形式出现,难度虽然不高但分值较高,因此要特别重视。下面通过一些例题,分析其常见的应用。一、知某个函数值,求其余各函数值“知某个函数值,求其余各函数值”是考查同角三
In high school mathematics, the basic relation of trigonometric trigonometry is an important knowledge point of trigonometric functions. There are three common applications of trigonometric functions: (1) to know the value of a function and find the values of other functions; (2) to simplify Trigonometric function; (3) Prove the triangle identity. Through its common application we can see that these types of questions are usually in the form of answers to questions, although the difficulty is not high but the score is high, so pay special attention. Here are some examples to analyze its common applications. First, to know a function value, seek the rest of the function value “Know a function value, find the rest of the function value ” is to examine the same angle