tan(π/6 -θ )+tan(π/6+θ)+根号3tan(π/6-θ)tan(π/6+θ)化简这个式子,tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+根号3tan(π/6-θ)tan(π/6+θ)tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+这个是怎么来的tan[(π/6-θ)+(

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tan(π/6-θ)+tan(π/6+θ)+根号3tan(π/6-θ)tan(π/6+θ)化简这个式子,tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+根号3t

tan(π/6 -θ )+tan(π/6+θ)+根号3tan(π/6-θ)tan(π/6+θ)化简这个式子,tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+根号3tan(π/6-θ)tan(π/6+θ)tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+这个是怎么来的tan[(π/6-θ)+(
tan(π/6 -θ )+tan(π/6+θ)+根号3tan(π/6-θ)tan(π/6+θ)化简这个式子,
tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+根号3tan(π/6-θ)tan(π/6+θ)
tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+这个是怎么来的
tan[(π/6-θ)+(π/6+θ)]*[1-tan(π/6-θ)tan(π/6+θ)]+写错了

tan(π/6 -θ )+tan(π/6+θ)+根号3tan(π/6-θ)tan(π/6+θ)化简这个式子,tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+根号3tan(π/6-θ)tan(π/6+θ)tan[(π/6-θ)+(π/6+θ)]*[1-tan(π-θ)tan(π/6+θ)]+这个是怎么来的tan[(π/6-θ)+(
是由tan(α+β)=(tanα+tanβ)/(1-tanαtanβ)得出的
原式求tan(π/6 -θ )+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)
先看前一部分
由 tan(A+B) = (tanA+tanB)/(1-tanAtanB)
tan(π/6 -θ )+tan(π/6+θ)=tan(π/3)(1-tan(π/6-θ)tan(π/6+θ))
tan(π/3)=√3
提出一个公因式√3
全式=√3(1-tan(π/6-θ)tan(π/6+θ)+tan(π/6-θ)tan(π/6+θ))
=√3