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-arctan0.1×200-arctan0.01×200-arctan(1/0.375)*200-arctan(1/84.85)*200+arctan(1/3)*200+arctan(1/10.61)*200 的值.
    题型：数学计算
    解:
          -90-arctan0.1×200-arctan0.01×200-arctan(1/0.375)*200-arctan(1/84.85)*200+arctan(1/3)*200+arctan(1/10.61)*200
        =-90-arctan0.1×200-arctan0.01×200-arctan2.666667*200-arctan(1/84.85)*200+arctan(1/3)*200+arctan(1/10.61)*200
        =-90-arctan0.1×200-arctan0.01×200-arctan2.666667*200-arctan0.011786*200+arctan(1/3)*200+arctan(1/10.61)*200
        =-90-arctan0.1×200-arctan0.01×200-arctan2.666667*200-arctan0.011786*200+arctan0.333333*200+arctan(1/10.61)*200
        =-90-arctan0.1×200-arctan0.01×200-arctan2.666667*200-arctan0.011786*200+arctan0.333333*200+arctan0.094251*200
        =-90-0.099669×200-arctan0.01×200-arctan2.666667*200-arctan0.011786*200+arctan0.333333*200+arctan0.094251*200
        =-90-0.099669×200-0.01×200-arctan2.666667*200-arctan0.011786*200+arctan0.333333*200+arctan0.094251*200
        =-90-0.099669×200-0.01×200-1.212026*200-arctan0.011786*200+arctan0.333333*200+arctan0.094251*200
        =-90-0.099669×200-0.01×200-1.212026*200-0.011785*200+arctan0.333333*200+arctan0.094251*200
        =-90-0.099669×200-0.01×200-1.212026*200-0.011785*200+0.32175*200+arctan0.094251*200
        =-90-0.099669×200-0.01×200-1.212026*200-0.011785*200+0.32175*200+0.093973*200
        =-90-19.9338-0.01×200-1.212026*200-0.011785*200+0.32175*200+0.093973*200
        =-90-19.9338-2-1.212026*200-0.011785*200+0.32175*200+0.093973*200
        =-90-19.9338-2-242.4052-0.011785*200+0.32175*200+0.093973*200
        =-90-19.9338-2-242.4052-2.357+0.32175*200+0.093973*200
        =-90-19.9338-2-242.4052-2.357+64.35+0.093973*200
        =-90-19.9338-2-242.4052-2.357+64.35+18.7946
        =-109.9338-2-242.4052-2.357+64.35+18.7946
        =-111.9338-242.4052-2.357+64.35+18.7946
        =-354.339-2.357+64.35+18.7946
        =-356.696+64.35+18.7946
        =-292.346+18.7946
        =-273.5514
    答案:-90-arctan0.1×200-arctan0.01×200-arctan(1/0.375)*200-arctan(1/84.85)*200+arctan(1/3)*200+arctan(1/10.61)*200=-273.5514
    注：弧度制

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