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

问题描述:

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