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三角函数是高中数学的基础内容,也是重要内容,同时三角函数还具有工具性.每年高考,无论是自主命题的省市还是全国统一命题的省市,三角函数都是必考内容,且占有一定的比例,因此学好三角函数应该说是必须的.为了让读者对三角函数有一个较全面的了解,本文将谈谈三角函数的复习,相信对你全面地把握三角函数的内容会有所帮助.一、常用技能举隅1.变角例1已知sin(3π4+α)=513,cos(π4-β)=
Trigonometric function is the basic content of high school mathematics, but also an important part of the trigonometric functions also has instrumental .Every year college entrance examination, whether autonomous propositions of the provinces or cities nationwide proposition proposition, the trigonometric functions are mandatory content, and possession of certain So, to learn trigonometric functions should be said that in order to allow readers to have a more comprehensive understanding of trigonometric functions, this article will talk about trigonometric function review, I believe you have a full grasp of the trigonometric functions will be helpful. First, the commonly used examples of skills 1. Variation Example 1 Known sin (3π4 + α) = 513, cos (π4-β) =