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(0.623)-arctan(0.2*0.623)-arctan(102.89*0.623)+arctan(16.05*0.623) 的值.
    题型：数学计算
    解:
          180-90-arctan(0.623)-arctan(0.2*0.623)-arctan(102.89*0.623)+arctan(16.05*0.623)
        =180-90-arctan0.623-arctan(0.2*0.623)-arctan(102.89*0.623)+arctan(16.05*0.623)
        =180-90-arctan0.623-arctan0.1246-arctan(102.89*0.623)+arctan(16.05*0.623)
        =180-90-arctan0.623-arctan0.1246-arctan64.10047+arctan(16.05*0.623)
        =180-90-arctan0.623-arctan0.1246-arctan64.10047+arctan9.99915
        =180-90-0.55716-arctan0.1246-arctan64.10047+arctan9.99915
        =180-90-0.55716-0.123961-arctan64.10047+arctan9.99915
        =180-90-0.55716-0.123961-1.555197+arctan9.99915
        =180-90-0.55716-0.123961-1.555197+1.471119
        =90-0.55716-0.123961-1.555197+1.471119
        =89.44284-0.123961-1.555197+1.471119
        =89.318879-1.555197+1.471119
        =87.763682+1.471119
        =89.234801
    答案:180-90-arctan(0.623)-arctan(0.2*0.623)-arctan(102.89*0.623)+arctan(16.05*0.623)=89.234801
    注：弧度制

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