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