tan兀/12一1/tan兀/12

tan兀/12一1/tan兀/12 tan(π/12)-(1/tan(π/12)) tan（兀/2-A）=1/tan (1-tan^2π/12)/(tanπ/12)化简 计算 tanπ/12+1/tanπ/12 计算tanπ/12 / (1-tan^2π/12)= 求tan 派/12-1/tan派/12的值 tan(π/12)+1/tan(π/12)=啥? tanπ/12-1/tanπ/12= 化简：tan(π/8)+1/tan(π/12) tan(π/8)+1/(tan(π/12))值,要过程 化简：[tan(5/4)π+tan(5/12)π]/[1-tan(5/12)π] 化简：[tan（5π）/4+tan(5π)/12]/[1-tan(5π)/12] 【tan(5pai/4)+tan(5pai/12)】/【1-tan(5pai/12)】如何化简 tan(-17兀/6) . tan(-17兀/6) tan派/12 化简tan(18-x)tan(12+x)+根号3[tan(18-x)+tan(12+x)]