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-arctan30-arctan3-arctan(300/0.375)-arctan(300/84.85)+arctan(300/3)+arctan(300/10.61) 的值.
    题型：数学计算
    解:
          -90-arctan30-arctan3-arctan(300/0.375)-arctan(300/84.85)+arctan(300/3)+arctan(300/10.61)
        =-90-arctan30-arctan3-arctan800-arctan(300/84.85)+arctan(300/3)+arctan(300/10.61)
        =-90-arctan30-arctan3-arctan800-arctan3.535651+arctan(300/3)+arctan(300/10.61)
        =-90-arctan30-arctan3-arctan800-arctan3.535651+arctan100+arctan(300/10.61)
        =-90-arctan30-arctan3-arctan800-arctan3.535651+arctan100+arctan28.275212
        =-90-1.537475-arctan3-arctan800-arctan3.535651+arctan100+arctan28.275212
        =-90-1.537475-1.249046-arctan800-arctan3.535651+arctan100+arctan28.275212
        =-90-1.537475-1.249046-1.569546-arctan3.535651+arctan100+arctan28.275212
        =-90-1.537475-1.249046-1.569546-1.295162+arctan100+arctan28.275212
        =-90-1.537475-1.249046-1.569546-1.295162+1.560797+arctan28.275212
        =-90-1.537475-1.249046-1.569546-1.295162+1.560797+1.535444
        =-91.537475-1.249046-1.569546-1.295162+1.560797+1.535444
        =-92.786521-1.569546-1.295162+1.560797+1.535444
        =-94.356067-1.295162+1.560797+1.535444
        =-95.651229+1.560797+1.535444
        =-94.090432+1.535444
        =-92.554988
    答案:-90-arctan30-arctan3-arctan(300/0.375)-arctan(300/84.85)+arctan(300/3)+arctan(300/10.61)=-92.554988
    注：弧度制

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