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三角函数作为初等函数的一种,与其他函数一样,学习及研究的相关内容都是一样的,也就是说,我们研究三角函数的性质都是包括函数的单调性、周期性和奇偶性等等.那么,我们运用导数来解决三角函数的问题的思路也是一样的.下面我们用几个具体的例子来归纳这类问题的解题方法.一、
As a kind of elementary function, the trigonometric function is the same as other functions, and the related content of learning and research is the same. That is to say, the properties of trigonometric functions we study include monotonicity, periodicity, parity, etc. So, we use the derivative to solve the problem of trigonometric functions of the same idea. Here we use a few specific examples to summarize the solution of such problems .A first,