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(1.28/0.128)-arctan(0.125*1.28)-arctan(0.5*1.28)-arctan(1.28/0.02184) 的值.
    题型：数学计算
    解:
          180-90+arctan(1.28/0.128)-arctan(0.125*1.28)-arctan(0.5*1.28)-arctan(1.28/0.02184)
        =180-90+arctan10-arctan(0.125*1.28)-arctan(0.5*1.28)-arctan(1.28/0.02184)
        =180-90+arctan10-arctan0.16-arctan(0.5*1.28)-arctan(1.28/0.02184)
        =180-90+arctan10-arctan0.16-arctan0.64-arctan(1.28/0.02184)
        =180-90+arctan10-arctan0.16-arctan0.64-arctan58.608059
        =180-90+1.471128-arctan0.16-arctan0.64-arctan58.608059
        =180-90+1.471128-0.158655-arctan0.64-arctan58.608059
        =180-90+1.471128-0.158655-0.569313-arctan58.608059
        =180-90+1.471128-0.158655-0.569313-1.553735
        =90+1.471128-0.158655-0.569313-1.553735
        =91.471128-0.158655-0.569313-1.553735
        =91.312473-0.569313-1.553735
        =90.74316-1.553735
        =89.189425
    答案:180-90+arctan(1.28/0.128)-arctan(0.125*1.28)-arctan(0.5*1.28)-arctan(1.28/0.02184)=89.189425
    注：弧度制

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