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三角函数是高考考查的重点,三角函数的值域与最值尤为突出,在高三的复习课中能理解掌握值域的各种类型,使学生在复习过程中达到事半攻倍的效果,提高学生的解题能力。
The trigonometric function is the focus of the college entrance examination. The range and value of the trigonometric function are particularly prominent. In the third grade review class, you can understand the various types of the value range, so that the students can achieve the effect of half the attack in the review process, and improve Students’ ability to solve problems.