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-arctan(0.12×24.15)-arctan(0.02×24.15)-arctan(1/0.205×24.15)-arctan(1/23.894×24.15)+arctan(1/1.3×24.15)+arctan(1/7.073×24.15) 的值.
    题型：数学计算
    解:
          -90-arctan(0.12×24.15)-arctan(0.02×24.15)-arctan(1/0.205×24.15)-arctan(1/23.894×24.15)+arctan(1/1.3×24.15)+arctan(1/7.073×24.15)
        =-90-arctan2.898-arctan(0.02×24.15)-arctan(1/0.205×24.15)-arctan(1/23.894×24.15)+arctan(1/1.3×24.15)+arctan(1/7.073×24.15)
        =-90-arctan2.898-arctan0.483-arctan(1/0.205×24.15)-arctan(1/23.894×24.15)+arctan(1/1.3×24.15)+arctan(1/7.073×24.15)
        =-90-arctan2.898-arctan0.483-arctan117.804883-arctan(1/23.894×24.15)+arctan(1/1.3×24.15)+arctan(1/7.073×24.15)
        =-90-arctan2.898-arctan0.483-arctan117.804883-arctan1.010726+arctan(1/1.3×24.15)+arctan(1/7.073×24.15)
        =-90-arctan2.898-arctan0.483-arctan117.804883-arctan1.010726+arctan18.576929+arctan(1/7.073×24.15)
        =-90-arctan2.898-arctan0.483-arctan117.804883-arctan1.010726+arctan18.576929+arctan3.414399
        =-90-1.238524-arctan0.483-arctan117.804883-arctan1.010726+arctan18.576929+arctan3.414399
        =-90-1.238524-0.449955-arctan117.804883-arctan1.010726+arctan18.576929+arctan3.414399
        =-90-1.238524-0.449955-1.562308-arctan1.010726+arctan18.576929+arctan3.414399
        =-90-1.238524-0.449955-1.562308-0.790733+arctan18.576929+arctan3.414399
        =-90-1.238524-0.449955-1.562308-0.790733+1.517018+arctan3.414399
        =-90-1.238524-0.449955-1.562308-0.790733+1.517018+1.285887
        =-91.238524-0.449955-1.562308-0.790733+1.517018+1.285887
        =-91.688479-1.562308-0.790733+1.517018+1.285887
        =-93.250787-0.790733+1.517018+1.285887
        =-94.04152+1.517018+1.285887
        =-92.524502+1.285887
        =-91.238615
    答案:-90-arctan(0.12×24.15)-arctan(0.02×24.15)-arctan(1/0.205×24.15)-arctan(1/23.894×24.15)+arctan(1/1.3×24.15)+arctan(1/7.073×24.15)=-91.238615
    注：弧度制

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