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 -90-arctan(0.1*50)-arctan(0.01*50)-arctan(50/0.375)-arctan(50/84.85)+arctan(50/3)+arctan(50/10.61) 的值.
    题型：数学计算
    解:
          -90-arctan(0.1*50)-arctan(0.01*50)-arctan(50/0.375)-arctan(50/84.85)+arctan(50/3)+arctan(50/10.61)
        =-90-arctan5-arctan(0.01*50)-arctan(50/0.375)-arctan(50/84.85)+arctan(50/3)+arctan(50/10.61)
        =-90-arctan5-arctan0.5-arctan(50/0.375)-arctan(50/84.85)+arctan(50/3)+arctan(50/10.61)
        =-90-arctan5-arctan0.5-arctan133.333333-arctan(50/84.85)+arctan(50/3)+arctan(50/10.61)
        =-90-arctan5-arctan0.5-arctan133.333333-arctan0.589275+arctan(50/3)+arctan(50/10.61)
        =-90-arctan5-arctan0.5-arctan133.333333-arctan0.589275+arctan16.666667+arctan(50/10.61)
        =-90-arctan5-arctan0.5-arctan133.333333-arctan0.589275+arctan16.666667+arctan4.712535
        =-90-1.373401-arctan0.5-arctan133.333333-arctan0.589275+arctan16.666667+arctan4.712535
        =-90-1.373401-0.463648-arctan133.333333-arctan0.589275+arctan16.666667+arctan4.712535
        =-90-1.373401-0.463648-1.563296-arctan0.589275+arctan16.666667+arctan4.712535
        =-90-1.373401-0.463648-1.563296-0.532496+arctan16.666667+arctan4.712535
        =-90-1.373401-0.463648-1.563296-0.532496+1.510868+arctan4.712535
        =-90-1.373401-0.463648-1.563296-0.532496+1.510868+1.361698
        =-91.373401-0.463648-1.563296-0.532496+1.510868+1.361698
        =-91.837049-1.563296-0.532496+1.510868+1.361698
        =-93.400345-0.532496+1.510868+1.361698
        =-93.932841+1.510868+1.361698
        =-92.421973+1.361698
        =-91.060275
    答案:-90-arctan(0.1*50)-arctan(0.01*50)-arctan(50/0.375)-arctan(50/84.85)+arctan(50/3)+arctan(50/10.61)=-91.060275
    注：弧度制

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