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-arctan0.1×300-arctan0.01×300-arctan(1/0.375)*300-arctan(1/84.85)*300+arctan(1/3)*300+arctan(1/10.61)*300 的值.
    题型：数学计算
    解:
          -90-arctan0.1×300-arctan0.01×300-arctan(1/0.375)*300-arctan(1/84.85)*300+arctan(1/3)*300+arctan(1/10.61)*300
        =-90-arctan0.1×300-arctan0.01×300-arctan2.666667*300-arctan(1/84.85)*300+arctan(1/3)*300+arctan(1/10.61)*300
        =-90-arctan0.1×300-arctan0.01×300-arctan2.666667*300-arctan0.011786*300+arctan(1/3)*300+arctan(1/10.61)*300
        =-90-arctan0.1×300-arctan0.01×300-arctan2.666667*300-arctan0.011786*300+arctan0.333333*300+arctan(1/10.61)*300
        =-90-arctan0.1×300-arctan0.01×300-arctan2.666667*300-arctan0.011786*300+arctan0.333333*300+arctan0.094251*300
        =-90-0.099669×300-arctan0.01×300-arctan2.666667*300-arctan0.011786*300+arctan0.333333*300+arctan0.094251*300
        =-90-0.099669×300-0.01×300-arctan2.666667*300-arctan0.011786*300+arctan0.333333*300+arctan0.094251*300
        =-90-0.099669×300-0.01×300-1.212026*300-arctan0.011786*300+arctan0.333333*300+arctan0.094251*300
        =-90-0.099669×300-0.01×300-1.212026*300-0.011785*300+arctan0.333333*300+arctan0.094251*300
        =-90-0.099669×300-0.01×300-1.212026*300-0.011785*300+0.32175*300+arctan0.094251*300
        =-90-0.099669×300-0.01×300-1.212026*300-0.011785*300+0.32175*300+0.093973*300
        =-90-29.9007-0.01×300-1.212026*300-0.011785*300+0.32175*300+0.093973*300
        =-90-29.9007-3-1.212026*300-0.011785*300+0.32175*300+0.093973*300
        =-90-29.9007-3-363.6078-0.011785*300+0.32175*300+0.093973*300
        =-90-29.9007-3-363.6078-3.5355+0.32175*300+0.093973*300
        =-90-29.9007-3-363.6078-3.5355+96.525+0.093973*300
        =-90-29.9007-3-363.6078-3.5355+96.525+28.1919
        =-119.9007-3-363.6078-3.5355+96.525+28.1919
        =-122.9007-363.6078-3.5355+96.525+28.1919
        =-486.5085-3.5355+96.525+28.1919
        =-490.044+96.525+28.1919
        =-393.519+28.1919
        =-365.3271
    答案:-90-arctan0.1×300-arctan0.01×300-arctan(1/0.375)*300-arctan(1/84.85)*300+arctan(1/3)*300+arctan(1/10.61)*300=-365.3271
    注：弧度制

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