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-arctan0.1×0.5-arctan0.01×0.5-arctan(1/0.375)*0.5-arctan(1/84.85)*0.5+arctan(1/3)*0.5+arctan(1/10.61)*0.5 的值.
    题型：数学计算
    解:
          -90-arctan0.1×0.5-arctan0.01×0.5-arctan(1/0.375)*0.5-arctan(1/84.85)*0.5+arctan(1/3)*0.5+arctan(1/10.61)*0.5
        =-90-arctan0.1×0.5-arctan0.01×0.5-arctan2.666667*0.5-arctan(1/84.85)*0.5+arctan(1/3)*0.5+arctan(1/10.61)*0.5
        =-90-arctan0.1×0.5-arctan0.01×0.5-arctan2.666667*0.5-arctan0.011786*0.5+arctan(1/3)*0.5+arctan(1/10.61)*0.5
        =-90-arctan0.1×0.5-arctan0.01×0.5-arctan2.666667*0.5-arctan0.011786*0.5+arctan0.333333*0.5+arctan(1/10.61)*0.5
        =-90-arctan0.1×0.5-arctan0.01×0.5-arctan2.666667*0.5-arctan0.011786*0.5+arctan0.333333*0.5+arctan0.094251*0.5
        =-90-0.099669×0.5-arctan0.01×0.5-arctan2.666667*0.5-arctan0.011786*0.5+arctan0.333333*0.5+arctan0.094251*0.5
        =-90-0.099669×0.5-0.01×0.5-arctan2.666667*0.5-arctan0.011786*0.5+arctan0.333333*0.5+arctan0.094251*0.5
        =-90-0.099669×0.5-0.01×0.5-1.212026*0.5-arctan0.011786*0.5+arctan0.333333*0.5+arctan0.094251*0.5
        =-90-0.099669×0.5-0.01×0.5-1.212026*0.5-0.011785*0.5+arctan0.333333*0.5+arctan0.094251*0.5
        =-90-0.099669×0.5-0.01×0.5-1.212026*0.5-0.011785*0.5+0.32175*0.5+arctan0.094251*0.5
        =-90-0.099669×0.5-0.01×0.5-1.212026*0.5-0.011785*0.5+0.32175*0.5+0.093973*0.5
        =-90-0.049834-0.01×0.5-1.212026*0.5-0.011785*0.5+0.32175*0.5+0.093973*0.5
        =-90-0.049834-0.005-1.212026*0.5-0.011785*0.5+0.32175*0.5+0.093973*0.5
        =-90-0.049834-0.005-0.606013-0.011785*0.5+0.32175*0.5+0.093973*0.5
        =-90-0.049834-0.005-0.606013-0.005893+0.32175*0.5+0.093973*0.5
        =-90-0.049834-0.005-0.606013-0.005893+0.160875+0.093973*0.5
        =-90-0.049834-0.005-0.606013-0.005893+0.160875+0.046987
        =-90.049834-0.005-0.606013-0.005893+0.160875+0.046987
        =-90.054834-0.606013-0.005893+0.160875+0.046987
        =-90.660847-0.005893+0.160875+0.046987
        =-90.66674+0.160875+0.046987
        =-90.505865+0.046987
        =-90.458878
    答案:-90-arctan0.1×0.5-arctan0.01×0.5-arctan(1/0.375)*0.5-arctan(1/84.85)*0.5+arctan(1/3)*0.5+arctan(1/10.61)*0.5=-90.458878
    注：弧度制

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