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*60)-arctan(0.01*60)-arctan(60/0.375)-arctan(60/84.85)+arctan(60/3)+arctan(60/10.61) 的值.
    题型：数学计算
    解:
          -90-arctan(0.1*60)-arctan(0.01*60)-arctan(60/0.375)-arctan(60/84.85)+arctan(60/3)+arctan(60/10.61)
        =-90-arctan6-arctan(0.01*60)-arctan(60/0.375)-arctan(60/84.85)+arctan(60/3)+arctan(60/10.61)
        =-90-arctan6-arctan0.6-arctan(60/0.375)-arctan(60/84.85)+arctan(60/3)+arctan(60/10.61)
        =-90-arctan6-arctan0.6-arctan160-arctan(60/84.85)+arctan(60/3)+arctan(60/10.61)
        =-90-arctan6-arctan0.6-arctan160-arctan0.70713+arctan(60/3)+arctan(60/10.61)
        =-90-arctan6-arctan0.6-arctan160-arctan0.70713+arctan20+arctan(60/10.61)
        =-90-arctan6-arctan0.6-arctan160-arctan0.70713+arctan20+arctan5.655042
        =-90-1.405648-arctan0.6-arctan160-arctan0.70713+arctan20+arctan5.655042
        =-90-1.405648-0.54042-arctan160-arctan0.70713+arctan20+arctan5.655042
        =-90-1.405648-0.54042-1.564546-arctan0.70713+arctan20+arctan5.655042
        =-90-1.405648-0.54042-1.564546-0.615495+arctan20+arctan5.655042
        =-90-1.405648-0.54042-1.564546-0.615495+1.520838+arctan5.655042
        =-90-1.405648-0.54042-1.564546-0.615495+1.520838+1.395772
        =-91.405648-0.54042-1.564546-0.615495+1.520838+1.395772
        =-91.946068-1.564546-0.615495+1.520838+1.395772
        =-93.510614-0.615495+1.520838+1.395772
        =-94.126109+1.520838+1.395772
        =-92.605271+1.395772
        =-91.209499
    答案:-90-arctan(0.1*60)-arctan(0.01*60)-arctan(60/0.375)-arctan(60/84.85)+arctan(60/3)+arctan(60/10.61)=-91.209499
    注：弧度制

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