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-arctan0.1×0.7-arctan0.01×0.7-arctan(1/0.375)*0.7-arctan(1/84.85)*0.7+arctan(1/3)*0.7+arctan(1/10.61)*0.7 的值.
    题型：数学计算
    解:
          -90-arctan0.1×0.7-arctan0.01×0.7-arctan(1/0.375)*0.7-arctan(1/84.85)*0.7+arctan(1/3)*0.7+arctan(1/10.61)*0.7
        =-90-arctan0.1×0.7-arctan0.01×0.7-arctan2.666667*0.7-arctan(1/84.85)*0.7+arctan(1/3)*0.7+arctan(1/10.61)*0.7
        =-90-arctan0.1×0.7-arctan0.01×0.7-arctan2.666667*0.7-arctan0.011786*0.7+arctan(1/3)*0.7+arctan(1/10.61)*0.7
        =-90-arctan0.1×0.7-arctan0.01×0.7-arctan2.666667*0.7-arctan0.011786*0.7+arctan0.333333*0.7+arctan(1/10.61)*0.7
        =-90-arctan0.1×0.7-arctan0.01×0.7-arctan2.666667*0.7-arctan0.011786*0.7+arctan0.333333*0.7+arctan0.094251*0.7
        =-90-0.099669×0.7-arctan0.01×0.7-arctan2.666667*0.7-arctan0.011786*0.7+arctan0.333333*0.7+arctan0.094251*0.7
        =-90-0.099669×0.7-0.01×0.7-arctan2.666667*0.7-arctan0.011786*0.7+arctan0.333333*0.7+arctan0.094251*0.7
        =-90-0.099669×0.7-0.01×0.7-1.212026*0.7-arctan0.011786*0.7+arctan0.333333*0.7+arctan0.094251*0.7
        =-90-0.099669×0.7-0.01×0.7-1.212026*0.7-0.011785*0.7+arctan0.333333*0.7+arctan0.094251*0.7
        =-90-0.099669×0.7-0.01×0.7-1.212026*0.7-0.011785*0.7+0.32175*0.7+arctan0.094251*0.7
        =-90-0.099669×0.7-0.01×0.7-1.212026*0.7-0.011785*0.7+0.32175*0.7+0.093973*0.7
        =-90-0.069768-0.01×0.7-1.212026*0.7-0.011785*0.7+0.32175*0.7+0.093973*0.7
        =-90-0.069768-0.007-1.212026*0.7-0.011785*0.7+0.32175*0.7+0.093973*0.7
        =-90-0.069768-0.007-0.848418-0.011785*0.7+0.32175*0.7+0.093973*0.7
        =-90-0.069768-0.007-0.848418-0.008249+0.32175*0.7+0.093973*0.7
        =-90-0.069768-0.007-0.848418-0.008249+0.225225+0.093973*0.7
        =-90-0.069768-0.007-0.848418-0.008249+0.225225+0.065781
        =-90.069768-0.007-0.848418-0.008249+0.225225+0.065781
        =-90.076768-0.848418-0.008249+0.225225+0.065781
        =-90.925186-0.008249+0.225225+0.065781
        =-90.933435+0.225225+0.065781
        =-90.70821+0.065781
        =-90.642429
    答案:-90-arctan0.1×0.7-arctan0.01×0.7-arctan(1/0.375)*0.7-arctan(1/84.85)*0.7+arctan(1/3)*0.7+arctan(1/10.61)*0.7=-90.642429
    注：弧度制

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