導讀sin(A+B)=sinAcosB+cosAsinBsin(A-B)=sinAcosB-sinBcosA，今天小編就來聊一聊關于sin,cos,tan等量關....

sin(A+B)=sinAcosB+cosAsinB sin(A-B)=sinAcosB-sinBcosA ，今天小編就來聊一聊關于sin,cos,tan等量關系式?接下來我們就一起去研究一下吧!

sin,cos,tan等量關系式

sin(A+B)=sinAcosB+cosAsinB

sin(A-B)=sinAcosB-sinBcosA

cos(A+B)=cosAcosB-sinAsinB

cos(A-B)=cosAcosB+sinAsinB

tan(A+B)=(tanA+tanB)/(1-tanAtanB)

tan(A-B)=(tanA-tanB)/(1+tanAtanB)