【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《第三章 三角恒等变换公式默写》,欢迎阅读!
公式默写1
1、和差倍角公式: 班级________姓名:___________
cos(a-b)=______________;cos(a+b)=______________sin(a-b)=______________;sin(a+b)=______________
tan(a-b)=______________;tan(a+b)=______________
2、倍角公式:
sin2a=_____________;tan2a=__________cos2a=________=________=________
3、降幂公式:
sina?cosa
______ sin2a=______
cos2a=______
4、辅助角公式:
asinx?bcosx________________,其中a、b>0,tanj=______,j?______
公式默写1
1、和差倍角公式: 班级________姓名:___________
cos(a-b)=______________;cos(a+b)=______________sin(a-b)=______________;sin(a+b)=______________
tan(a-b)=______________;tan(a+b)=______________
2、倍角公式:
sin2a=_____________;tan2a=__________cos2a=________=________=________
3、降幂公式:
sina?cosa
______ sin2a=______
cos2a=______
4、辅助角公式:
asinx?bcosx
________________,其中a、b>0,tanj=______,j?______
正弦定理:_____=______=______=_______ 推论:(1)a:b:c=____________
(2)a=2R________; ÛsinA=_______;(边角互化、其余两组同理) (3)面积公式:S=
2
1
ab______=__________=__________ 2
___cos 余弦定理:a=______________ _ _ _推论:A=____________________
b=______________ _ _ _ _ _ _ cosB=____________________ c=______________ _ _ _ _ _ _ cosC=____________________
正弦定理:_____=______=______=_______ 推论:(1)a:b:c=____________
(2)a=2R________; ÛsinA=_______;(边角互化、其余两组同理) (3)面积公式:S=
222
1
ab______=__________=__________ 2
___cos 余弦定理:a=______________ _ _ _推论:A=____________________
b=____________________ cosB=____________________ c=____________________ cosC=____________________
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