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-arctan0.1×0.1-arctan0.001-arctan(1/0.375)*0.1-arctan(1/84.85)*0.1+arctan(1/3)*0.1+arctan(1/10.61)*0.1 的值.
    题型：数学计算
    解:
          -90-arctan0.1×0.1-arctan0.001-arctan(1/0.375)*0.1-arctan(1/84.85)*0.1+arctan(1/3)*0.1+arctan(1/10.61)*0.1
        =-90-arctan0.1×0.1-arctan0.001-arctan2.666667*0.1-arctan(1/84.85)*0.1+arctan(1/3)*0.1+arctan(1/10.61)*0.1
        =-90-arctan0.1×0.1-arctan0.001-arctan2.666667*0.1-arctan0.011786*0.1+arctan(1/3)*0.1+arctan(1/10.61)*0.1
        =-90-arctan0.1×0.1-arctan0.001-arctan2.666667*0.1-arctan0.011786*0.1+arctan0.333333*0.1+arctan(1/10.61)*0.1
        =-90-arctan0.1×0.1-arctan0.001-arctan2.666667*0.1-arctan0.011786*0.1+arctan0.333333*0.1+arctan0.094251*0.1
        =-90-0.099669×0.1-arctan0.001-arctan2.666667*0.1-arctan0.011786*0.1+arctan0.333333*0.1+arctan0.094251*0.1
        =-90-0.099669×0.1-0.001-arctan2.666667*0.1-arctan0.011786*0.1+arctan0.333333*0.1+arctan0.094251*0.1
        =-90-0.099669×0.1-0.001-1.212026*0.1-arctan0.011786*0.1+arctan0.333333*0.1+arctan0.094251*0.1
        =-90-0.099669×0.1-0.001-1.212026*0.1-0.011785*0.1+arctan0.333333*0.1+arctan0.094251*0.1
        =-90-0.099669×0.1-0.001-1.212026*0.1-0.011785*0.1+0.32175*0.1+arctan0.094251*0.1
        =-90-0.099669×0.1-0.001-1.212026*0.1-0.011785*0.1+0.32175*0.1+0.093973*0.1
        =-90-0.009967-0.001-1.212026*0.1-0.011785*0.1+0.32175*0.1+0.093973*0.1
        =-90-0.009967-0.001-0.121203-0.011785*0.1+0.32175*0.1+0.093973*0.1
        =-90-0.009967-0.001-0.121203-0.001179+0.32175*0.1+0.093973*0.1
        =-90-0.009967-0.001-0.121203-0.001179+0.032175+0.093973*0.1
        =-90-0.009967-0.001-0.121203-0.001179+0.032175+0.009397
        =-90.009967-0.001-0.121203-0.001179+0.032175+0.009397
        =-90.010967-0.121203-0.001179+0.032175+0.009397
        =-90.13217-0.001179+0.032175+0.009397
        =-90.133349+0.032175+0.009397
        =-90.101174+0.009397
        =-90.091777
    答案:-90-arctan0.1×0.1-arctan0.001-arctan(1/0.375)*0.1-arctan(1/84.85)*0.1+arctan(1/3)*0.1+arctan(1/10.61)*0.1=-90.091777
    注：弧度制

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