已知Tan(π/4+尔发)=1/2.求Tan尔发

问题描述:

已知Tan(π/4+尔发)=1/2.求Tan尔发

已知Tan(π/4+α)=1/2.∴Tan(π/4+α)=(tanπ/4+tanα)/(1-tanπ/4·tanα)=2 解得:tanα=1/3