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 arctan(4.39÷3*8.085475)-90-arctan(8.085475)-arctan(0.01*8.085475)-arctan(1/3*8.085475) 的值.
    题型：数学计算
    解:
          arctan(4.39÷3*8.085475)-90-arctan(8.085475)-arctan(0.01*8.085475)-arctan(1/3*8.085475)
        =arctan11.831742-90-arctan(8.085475)-arctan(0.01*8.085475)-arctan(1/3*8.085475)
        =arctan11.831742-90-arctan8.085475-arctan(0.01*8.085475)-arctan(1/3*8.085475)
        =arctan11.831742-90-arctan8.085475-arctan0.080855-arctan(1/3*8.085475)
        =arctan11.831742-90-arctan8.085475-arctan0.080855-arctan2.695156
        =1.486478-90-arctan8.085475-arctan0.080855-arctan2.695156
        =1.486478-90-1.447743-arctan0.080855-arctan2.695156
        =1.486478-90-1.447743-0.080679-arctan2.695156
        =1.486478-90-1.447743-0.080679-1.215505
        =-88.513522-1.447743-0.080679-1.215505
        =-89.961265-0.080679-1.215505
        =-90.041944-1.215505
        =-91.257449
    答案:arctan(4.39÷3*8.085475)-90-arctan(8.085475)-arctan(0.01*8.085475)-arctan(1/3*8.085475)=-91.257449
    注：弧度制

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