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-arctan0.1×7-arctan0.01×7-arctan(1/0.375)*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7 的值.
    题型：数学计算
    解:
          -90-arctan0.1×7-arctan0.01×7-arctan(1/0.375)*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7
        =-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7
        =-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan(1/3)*7+arctan(1/10.61)*7
        =-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan(1/10.61)*7
        =-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
        =-90-0.099669×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
        =-90-0.099669×7-0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
        =-90-0.099669×7-0.01×7-1.212026*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
        =-90-0.099669×7-0.01×7-1.212026*7-0.011785*7+arctan0.333333*7+arctan0.094251*7
        =-90-0.099669×7-0.01×7-1.212026*7-0.011785*7+0.32175*7+arctan0.094251*7
        =-90-0.099669×7-0.01×7-1.212026*7-0.011785*7+0.32175*7+0.093973*7
        =-90-0.697683-0.01×7-1.212026*7-0.011785*7+0.32175*7+0.093973*7
        =-90-0.697683-0.07-1.212026*7-0.011785*7+0.32175*7+0.093973*7
        =-90-0.697683-0.07-8.484182-0.011785*7+0.32175*7+0.093973*7
        =-90-0.697683-0.07-8.484182-0.082495+0.32175*7+0.093973*7
        =-90-0.697683-0.07-8.484182-0.082495+2.25225+0.093973*7
        =-90-0.697683-0.07-8.484182-0.082495+2.25225+0.657811
        =-90.697683-0.07-8.484182-0.082495+2.25225+0.657811
        =-90.767683-8.484182-0.082495+2.25225+0.657811
        =-99.251865-0.082495+2.25225+0.657811
        =-99.33436+2.25225+0.657811
        =-97.08211+0.657811
        =-96.424299
    答案:-90-arctan0.1×7-arctan0.01×7-arctan(1/0.375)*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7=-96.424299
    注：弧度制

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