
Mathematics
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arcsin(0.25sin180) sin31^2+cos31^2 arcsin(0.25sin0) 13A(5,3)C(2,1)/3-13/3A(5,3)C(2,1) 13A(5,3)C(2,1)/3 13/3A(5,3)C(2,1) 1/tan90 log(tan90,sin90) ln!(20) lnC(20,9) A(tan90,3) 128√e980 2280.63894556^2 A(-4,3) 【0.05sin(3π/4)+0.06sin(π/4)】/【0.05cos(3π/4)-0.06cos(π/4)】 sin(3π/4) (0.05+0.06)/(0.06-0.05)
(0.05+0.06)/0.06-0.05
arctan2.5
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