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-arctan0.1×60-arctan0.01×60-arctan(1/0.375)*60-arctan(1/84.85)*60+arctan(1/3)*60+arctan(1/10.61)*60 的值.
    题型：数学计算
    解:
          -90-arctan0.1×60-arctan0.01×60-arctan(1/0.375)*60-arctan(1/84.85)*60+arctan(1/3)*60+arctan(1/10.61)*60
        =-90-arctan0.1×60-arctan0.01×60-arctan2.666667*60-arctan(1/84.85)*60+arctan(1/3)*60+arctan(1/10.61)*60
        =-90-arctan0.1×60-arctan0.01×60-arctan2.666667*60-arctan0.011786*60+arctan(1/3)*60+arctan(1/10.61)*60
        =-90-arctan0.1×60-arctan0.01×60-arctan2.666667*60-arctan0.011786*60+arctan0.333333*60+arctan(1/10.61)*60
        =-90-arctan0.1×60-arctan0.01×60-arctan2.666667*60-arctan0.011786*60+arctan0.333333*60+arctan0.094251*60
        =-90-0.099669×60-arctan0.01×60-arctan2.666667*60-arctan0.011786*60+arctan0.333333*60+arctan0.094251*60
        =-90-0.099669×60-0.01×60-arctan2.666667*60-arctan0.011786*60+arctan0.333333*60+arctan0.094251*60
        =-90-0.099669×60-0.01×60-1.212026*60-arctan0.011786*60+arctan0.333333*60+arctan0.094251*60
        =-90-0.099669×60-0.01×60-1.212026*60-0.011785*60+arctan0.333333*60+arctan0.094251*60
        =-90-0.099669×60-0.01×60-1.212026*60-0.011785*60+0.32175*60+arctan0.094251*60
        =-90-0.099669×60-0.01×60-1.212026*60-0.011785*60+0.32175*60+0.093973*60
        =-90-5.98014-0.01×60-1.212026*60-0.011785*60+0.32175*60+0.093973*60
        =-90-5.98014-0.6-1.212026*60-0.011785*60+0.32175*60+0.093973*60
        =-90-5.98014-0.6-72.72156-0.011785*60+0.32175*60+0.093973*60
        =-90-5.98014-0.6-72.72156-0.7071+0.32175*60+0.093973*60
        =-90-5.98014-0.6-72.72156-0.7071+19.305+0.093973*60
        =-90-5.98014-0.6-72.72156-0.7071+19.305+5.63838
        =-95.98014-0.6-72.72156-0.7071+19.305+5.63838
        =-96.58014-72.72156-0.7071+19.305+5.63838
        =-169.3017-0.7071+19.305+5.63838
        =-170.0088+19.305+5.63838
        =-150.7038+5.63838
        =-145.06542
    答案:-90-arctan0.1×60-arctan0.01×60-arctan(1/0.375)*60-arctan(1/84.85)*60+arctan(1/3)*60+arctan(1/10.61)*60=-145.06542
    注：弧度制

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