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-arctan0.1×90-arctan0.01×90-arctan(1/0.375)*90-arctan(1/84.85)*90+arctan(1/3)*90+arctan(1/10.61)*90 的值.
    题型：数学计算
    解:
          -90-arctan0.1×90-arctan0.01×90-arctan(1/0.375)*90-arctan(1/84.85)*90+arctan(1/3)*90+arctan(1/10.61)*90
        =-90-arctan0.1×90-arctan0.01×90-arctan2.666667*90-arctan(1/84.85)*90+arctan(1/3)*90+arctan(1/10.61)*90
        =-90-arctan0.1×90-arctan0.01×90-arctan2.666667*90-arctan0.011786*90+arctan(1/3)*90+arctan(1/10.61)*90
        =-90-arctan0.1×90-arctan0.01×90-arctan2.666667*90-arctan0.011786*90+arctan0.333333*90+arctan(1/10.61)*90
        =-90-arctan0.1×90-arctan0.01×90-arctan2.666667*90-arctan0.011786*90+arctan0.333333*90+arctan0.094251*90
        =-90-0.099669×90-arctan0.01×90-arctan2.666667*90-arctan0.011786*90+arctan0.333333*90+arctan0.094251*90
        =-90-0.099669×90-0.01×90-arctan2.666667*90-arctan0.011786*90+arctan0.333333*90+arctan0.094251*90
        =-90-0.099669×90-0.01×90-1.212026*90-arctan0.011786*90+arctan0.333333*90+arctan0.094251*90
        =-90-0.099669×90-0.01×90-1.212026*90-0.011785*90+arctan0.333333*90+arctan0.094251*90
        =-90-0.099669×90-0.01×90-1.212026*90-0.011785*90+0.32175*90+arctan0.094251*90
        =-90-0.099669×90-0.01×90-1.212026*90-0.011785*90+0.32175*90+0.093973*90
        =-90-8.97021-0.01×90-1.212026*90-0.011785*90+0.32175*90+0.093973*90
        =-90-8.97021-0.9-1.212026*90-0.011785*90+0.32175*90+0.093973*90
        =-90-8.97021-0.9-109.08234-0.011785*90+0.32175*90+0.093973*90
        =-90-8.97021-0.9-109.08234-1.06065+0.32175*90+0.093973*90
        =-90-8.97021-0.9-109.08234-1.06065+28.9575+0.093973*90
        =-90-8.97021-0.9-109.08234-1.06065+28.9575+8.45757
        =-98.97021-0.9-109.08234-1.06065+28.9575+8.45757
        =-99.87021-109.08234-1.06065+28.9575+8.45757
        =-208.95255-1.06065+28.9575+8.45757
        =-210.0132+28.9575+8.45757
        =-181.0557+8.45757
        =-172.59813
    答案:-90-arctan0.1×90-arctan0.01×90-arctan(1/0.375)*90-arctan(1/84.85)*90+arctan(1/3)*90+arctan(1/10.61)*90=-172.59813
    注：弧度制

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