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高三数学复习资料
更新时间： 2021-05-01 00:06:36  

1、直线的倾斜角

定义：x轴正向与直线向上方向之间所成的角叫直线的倾斜角.特别地,当直线与x轴平行或重合时,我们规定它的倾斜角为0度.因此,倾斜角的取值范围是0°≤α

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