tan(-7π/12)的值等于多少?
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tan(-7π/12)的值等于多少?
tan(-7π/12)的值等于多少?
tan(-7π/12)的值等于多少?
tan(-7π/12)=-tan(7π/12)=-tan(π/4+π/3)=-(1+√3)/(1-√3) =2+√3
2+√3
tan(-7π/12)的值等于多少?
tan(-7π/12)的值等于多少?
tan(-7π/12)的值等于多少?
tan(-7π/12)=-tan(7π/12)=-tan(π/4+π/3)=-(1+√3)/(1-√3) =2+√3
2+√3