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(0.1*70)-arctan(0.01*70)-arctan(70/0.375)-arctan(70/84.85)+arctan(70/3)+arctan(70/10.61) 的值.
    题型：数学计算
    解:
          -90-arctan(0.1*70)-arctan(0.01*70)-arctan(70/0.375)-arctan(70/84.85)+arctan(70/3)+arctan(70/10.61)
        =-90-arctan7-arctan(0.01*70)-arctan(70/0.375)-arctan(70/84.85)+arctan(70/3)+arctan(70/10.61)
        =-90-arctan7-arctan0.7-arctan(70/0.375)-arctan(70/84.85)+arctan(70/3)+arctan(70/10.61)
        =-90-arctan7-arctan0.7-arctan186.666667-arctan(70/84.85)+arctan(70/3)+arctan(70/10.61)
        =-90-arctan7-arctan0.7-arctan186.666667-arctan0.824985+arctan(70/3)+arctan(70/10.61)
        =-90-arctan7-arctan0.7-arctan186.666667-arctan0.824985+arctan23.333333+arctan(70/10.61)
        =-90-arctan7-arctan0.7-arctan186.666667-arctan0.824985+arctan23.333333+arctan6.597549
        =-90-1.428899-arctan0.7-arctan186.666667-arctan0.824985+arctan23.333333+arctan6.597549
        =-90-1.428899-0.610726-arctan186.666667-arctan0.824985+arctan23.333333+arctan6.597549
        =-90-1.428899-0.610726-1.565439-arctan0.824985+arctan23.333333+arctan6.597549
        =-90-1.428899-0.610726-1.565439-0.689791+arctan23.333333+arctan6.597549
        =-90-1.428899-0.610726-1.565439-0.689791+1.527965+arctan6.597549
        =-90-1.428899-0.610726-1.565439-0.689791+1.527965+1.42037
        =-91.428899-0.610726-1.565439-0.689791+1.527965+1.42037
        =-92.039625-1.565439-0.689791+1.527965+1.42037
        =-93.605064-0.689791+1.527965+1.42037
        =-94.294855+1.527965+1.42037
        =-92.76689+1.42037
        =-91.34652
    答案:-90-arctan(0.1*70)-arctan(0.01*70)-arctan(70/0.375)-arctan(70/84.85)+arctan(70/3)+arctan(70/10.61)=-91.34652
    注：弧度制

你的问题在这里没有得到解决？请到 热门难题 里面看看吧！