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(1.36/0.123)-arctan(0.125*1.23)-arctan(0.5*1.23)-arctan(1.23/0.020172) 的值.
    题型：数学计算
    解:
          180-90+arctan(1.36/0.123)-arctan(0.125*1.23)-arctan(0.5*1.23)-arctan(1.23/0.020172)
        =180-90+arctan11.056911-arctan(0.125*1.23)-arctan(0.5*1.23)-arctan(1.23/0.020172)
        =180-90+arctan11.056911-arctan0.15375-arctan(0.5*1.23)-arctan(1.23/0.020172)
        =180-90+arctan11.056911-arctan0.15375-arctan0.615-arctan(1.23/0.020172)
        =180-90+arctan11.056911-arctan0.15375-arctan0.615-arctan60.97561
        =180-90+1.480601-arctan0.15375-arctan0.615-arctan60.97561
        =180-90+1.480601-0.152555-arctan0.615-arctan60.97561
        =180-90+1.480601-0.152555-0.551376-arctan60.97561
        =180-90+1.480601-0.152555-0.551376-1.554398
        =90+1.480601-0.152555-0.551376-1.554398
        =91.480601-0.152555-0.551376-1.554398
        =91.328046-0.551376-1.554398
        =90.77667-1.554398
        =89.222272
    答案:180-90+arctan(1.36/0.123)-arctan(0.125*1.23)-arctan(0.5*1.23)-arctan(1.23/0.020172)=89.222272
    注：弧度制

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