总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 180-90+arctan(1.26/0.126)-arctan(0.125*1.26)-arctan(0.5*1.26)-arctan(1.26/0.021168) 的值.
    题型：数学计算
    解:
          180-90+arctan(1.26/0.126)-arctan(0.125*1.26)-arctan(0.5*1.26)-arctan(1.26/0.021168)
        =180-90+arctan10-arctan(0.125*1.26)-arctan(0.5*1.26)-arctan(1.26/0.021168)
        =180-90+arctan10-arctan0.1575-arctan(0.5*1.26)-arctan(1.26/0.021168)
        =180-90+arctan10-arctan0.1575-arctan0.63-arctan(1.26/0.021168)
        =180-90+arctan10-arctan0.1575-arctan0.63-arctan59.52381
        =180-90+1.471128-arctan0.1575-arctan0.63-arctan59.52381
        =180-90+1.471128-0.156217-arctan0.63-arctan59.52381
        =180-90+1.471128-0.156217-0.562187-arctan59.52381
        =180-90+1.471128-0.156217-0.562187-1.553998
        =90+1.471128-0.156217-0.562187-1.553998
        =91.471128-0.156217-0.562187-1.553998
        =91.314911-0.562187-1.553998
        =90.752724-1.553998
        =89.198726
    答案:180-90+arctan(1.26/0.126)-arctan(0.125*1.26)-arctan(0.5*1.26)-arctan(1.26/0.021168)=89.198726
    注：弧度制

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