sin cos tan三角函数公式大全

2023-12-07 10:42:29   文档大全网     [ 字体: ] [ 阅读: ]

#文档大全网# 导语】以下是®文档大全网的小编为您整理的《sin cos tan三角函数公式大全》,欢迎阅读!
三角函数,公式,大全,sin,cos
sin cos tan三角函数公式大全

1sin^x+cos^x=1

2sin(-x)=-sinx

3cos(-x)=cosx

4tan(-x)=-tanx

5sin(x+-y)=sinxcosy+-cosxsiny

6cos(x+-y)=cosxcosy-+sinxsiny

7tan(x+-y)=(tanx+-tany)/(1-+tanxtany)

8sin2x=2sinxcosx

9cos2x=cos^x-sin^x=2cos^x-1=1-2sin^x

10tan2x=2tanx/(1-tan^x)

11sin^x/2=(1-cosx)/2

12cos^x/2=(1+cosx)/2

13tan^x/2=sinx/(1+cosx)=(1-cosx)/sinx


141-cosx=2sin^x/2

151+cosx=2sin^x/2

16sinx=(2tanx/2)/(1+tan^x/2)

17cosx=(1-tan^x/2)/(1+tan^x/2)

18tanx=(2tanx/2)/(1-tan^x/2)

19sin3x=3sinx-4sin^3 x (sinx的三次方)

20cos3x=4cos^3 x-3cosx

21sinxcosy=1/2[sin(x+y)+sin(x-y)]

22cosxsiny=1/2[sin(x+y)-sin(x-y)]

23cosxcosy=1/2[cos(x+y)+cos(x-y)]

24sinxsiny-1/2[cos(x+y)-cos(x-y)]

25sinx+siny=2sin(x+y)/2cos(x-y)/2

26sinx-siny=2cos(x+y)/2sin(x-y)/2

27cosx+cosy=2cos(x+y)/2cos/(x-y)2


本文来源:https://www.wddqxz.cn/ea5bd0cdbfeb19e8b8f67c1cfad6195f312be888.html

相关推荐