(20+0-10×0)×0.33-2×10×√0.33+10×0
    （3.07-3.07/1.13*0.13+0.05）/7.07
    （3.21-3.21/1.13*0.13+0.05）/7.07
    （3.03-3.03/1.13*0.13+0.05）/7.24
    （3.07-3.07/1.13*0.13+0.05）/7.24
    （3.04-3.04/1.13*0.13+0.05）/7.24
    （tan(45+40/2)）^2
    （tan(45-40/2)）^2
    (85.7×10^6×264.1)/223221027.5
    (488×10^3)/9522
    （tan(45-30/2)）^2
    （tan(45-30/2)）^2
    （tan(45+30/2)）^2
    （tan(45+30/2)）^2
    （tan(45+12/2)）^2
    （tan(45+12/2)）^2
    （tan(45-12/2)）^2
    （tan(45-12/2)）^2
    （tan(45-12/2)）^2
    （2.99-2.99/1.13*0.13+0.08）/7.24

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