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*10)-arctan(0.01*10)-arctan(10/0.375)-arctan(10/84.85)+arctan(10/3)+arctan(10/10.61) 的值.
    题型：数学计算
    解:
          -90-arctan(0.1*10)-arctan(0.01*10)-arctan(10/0.375)-arctan(10/84.85)+arctan(10/3)+arctan(10/10.61)
        =-90-arctan1-arctan(0.01*10)-arctan(10/0.375)-arctan(10/84.85)+arctan(10/3)+arctan(10/10.61)
        =-90-arctan1-arctan0.1-arctan(10/0.375)-arctan(10/84.85)+arctan(10/3)+arctan(10/10.61)
        =-90-arctan1-arctan0.1-arctan26.666667-arctan(10/84.85)+arctan(10/3)+arctan(10/10.61)
        =-90-arctan1-arctan0.1-arctan26.666667-arctan0.117855+arctan(10/3)+arctan(10/10.61)
        =-90-arctan1-arctan0.1-arctan26.666667-arctan0.117855+arctan3.333333+arctan(10/10.61)
        =-90-arctan1-arctan0.1-arctan26.666667-arctan0.117855+arctan3.333333+arctan0.942507
        =-90-0.785398-arctan0.1-arctan26.666667-arctan0.117855+arctan3.333333+arctan0.942507
        =-90-0.785398-0.099669-arctan26.666667-arctan0.117855+arctan3.333333+arctan0.942507
        =-90-0.785398-0.099669-1.533314-arctan0.117855+arctan3.333333+arctan0.942507
        =-90-0.785398-0.099669-1.533314-0.117314+arctan3.333333+arctan0.942507
        =-90-0.785398-0.099669-1.533314-0.117314+1.27934+arctan0.942507
        =-90-0.785398-0.099669-1.533314-0.117314+1.27934+0.755809
        =-90.785398-0.099669-1.533314-0.117314+1.27934+0.755809
        =-90.885067-1.533314-0.117314+1.27934+0.755809
        =-92.418381-0.117314+1.27934+0.755809
        =-92.535695+1.27934+0.755809
        =-91.256355+0.755809
        =-90.500546
    答案:-90-arctan(0.1*10)-arctan(0.01*10)-arctan(10/0.375)-arctan(10/84.85)+arctan(10/3)+arctan(10/10.61)=-90.500546
    注：弧度制

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