sin,cos,tan等量關系式?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(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)
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