求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)
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求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)求值tan(π/
求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)
求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)
求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)tan(π/6+θ)
根号3 用两角和的正切公式展开tan(π/6-θ+π/6+θ)=a式/b式,将b式乘到等式左边再移项即得所求式子=根号3
求值tan(π/6-θ)+tan(π/6+θ)+√3tan(π/6-θ)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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