(1+tan π/12)/(1-tan π/12)的值是
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(1+tan π/12)/(1-tan π/12)的值是
(1+tan π/12)/(1-tan π/12)的值是
(1+tan π/12)/(1-tan π/12)的值是
(1+tan π/12)/(1-tan π/12)
=(tanπ/4+tan π/12)/(1-tanπ/4tan π/12)
=tan(π/4+π/12)
=tanπ/3
=√3
tan(π/12)-(1/tan(π/12))
(1-tan^2π/12)/(tanπ/12)化简
计算 tanπ/12+1/tanπ/12
计算tanπ/12 / (1-tan^2π/12)=
tan(π/12)+1/tan(π/12)=啥?
tanπ/12-1/tanπ/12=
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