2025年教学资料:4.1.2+终边相同的角(同步课件)-【中职专用】2023-2024学年高一数学同步精品课堂(高教版2021·基础模块上册)
第4章三角函数4.1.2终边相同的角探索新知情境导入典例剖析巩固练习归纳总结布置作业如图,30°,−330°,390°角之间有什么关系呢?不难发现,在平面直角坐标系中,这三个角的终边相同,并且都可以表示成30°与k个(k∈Z)360°的和.如:30°=30°+0×360°;−330°=30°+(−1)×360°;390°=30°+1×360°.探索新知情境导入典例剖析巩固练习归纳总结布置作业从上述角的形成过程可以看出,与30°终边相同的角有无数多个,它们与30°角均相差360°的整数倍.因此与30°终边相同的所有角可以表示为β=30°+k360°,kZ∈.探索新知情境导入典例剖析巩固练习归纳...
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