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*90)-arctan(0.01*90)-arctan(90/0.375)-arctan(90/84.85)+arctan(90/3)+arctan(90/10.61) 的值.
    题型：数学计算
    解:
          -90-arctan(0.1*90)-arctan(0.01*90)-arctan(90/0.375)-arctan(90/84.85)+arctan(90/3)+arctan(90/10.61)
        =-90-arctan9-arctan(0.01*90)-arctan(90/0.375)-arctan(90/84.85)+arctan(90/3)+arctan(90/10.61)
        =-90-arctan9-arctan0.9-arctan(90/0.375)-arctan(90/84.85)+arctan(90/3)+arctan(90/10.61)
        =-90-arctan9-arctan0.9-arctan240-arctan(90/84.85)+arctan(90/3)+arctan(90/10.61)
        =-90-arctan9-arctan0.9-arctan240-arctan1.060695+arctan(90/3)+arctan(90/10.61)
        =-90-arctan9-arctan0.9-arctan240-arctan1.060695+arctan30+arctan(90/10.61)
        =-90-arctan9-arctan0.9-arctan240-arctan1.060695+arctan30+arctan8.482564
        =-90-1.460139-arctan0.9-arctan240-arctan1.060695+arctan30+arctan8.482564
        =-90-1.460139-0.732815-arctan240-arctan1.060695+arctan30+arctan8.482564
        =-90-1.460139-0.732815-1.56663-arctan1.060695+arctan30+arctan8.482564
        =-90-1.460139-0.732815-1.56663-0.814843+arctan30+arctan8.482564
        =-90-1.460139-0.732815-1.56663-0.814843+1.537475+arctan8.482564
        =-90-1.460139-0.732815-1.56663-0.814843+1.537475+1.453449
        =-91.460139-0.732815-1.56663-0.814843+1.537475+1.453449
        =-92.192954-1.56663-0.814843+1.537475+1.453449
        =-93.759584-0.814843+1.537475+1.453449
        =-94.574427+1.537475+1.453449
        =-93.036952+1.453449
        =-91.583503
    答案:-90-arctan(0.1*90)-arctan(0.01*90)-arctan(90/0.375)-arctan(90/84.85)+arctan(90/3)+arctan(90/10.61)=-91.583503
    注：弧度制

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