三角函数公式大全
- 2008-03-26 19:36:53
- zhanghongbiao
- 原创 20791
三角函数相关公式大全 关键词: 三角公式 三角函数 最近复习微积分,几个三角函数的转换弄得我晕头转向,本来高中的时候就没记熟,现在又得记一遍了=.= 好郁闷,进度太慢了...
1 三角函数的定义1.1 三角形中的定义
图1 在直角三角形中定义三角函数的示意图
在直角三角形ABC,如下定义六个三角函数:
1.2[separator]
直角坐标系中的定义
图2 在直角坐标系中定义三角函数示意图
在直角坐标系中,如下定义六个三角函数:
2 转化关系2.1 倒数关系
[indent]

[/indent][indent]

[/indent]2.2 平方关系[indent]







[/indent]3 倍角公式、半角公式3.1 倍角公式[indent]








[/indent]3.3 万能公式[indent]



[/indent]4 积化和差、和差化积4.1 积化和差公式[indent]




[/indent]4.2 和差化积公式 [indent]




[/indent][indent]

[/indent]
评论列表
发表评论
博客分类
友情链接
转帖都能转错
兄弟太强了
潜水很久,偶尔冒出来一下~~~~~最近可好?要注意身体哈~~
身体没问题~祝我能门门过关哈,呵呵
谢谢清梦~