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(0.12×7.073)-arctan(0.02×7.073)-arctan(1/0.205×7.073)-arctan(1/23.894×7.073)+arctan(1/1.3×7.073)+arctan(1/7.073×7.073) 的值.
    题型：数学计算
    解:
          -90-arctan(0.12×7.073)-arctan(0.02×7.073)-arctan(1/0.205×7.073)-arctan(1/23.894×7.073)+arctan(1/1.3×7.073)+arctan(1/7.073×7.073)
        =-90-arctan0.84876-arctan(0.02×7.073)-arctan(1/0.205×7.073)-arctan(1/23.894×7.073)+arctan(1/1.3×7.073)+arctan(1/7.073×7.073)
        =-90-arctan0.84876-arctan0.14146-arctan(1/0.205×7.073)-arctan(1/23.894×7.073)+arctan(1/1.3×7.073)+arctan(1/7.073×7.073)
        =-90-arctan0.84876-arctan0.14146-arctan34.502441-arctan(1/23.894×7.073)+arctan(1/1.3×7.073)+arctan(1/7.073×7.073)
        =-90-arctan0.84876-arctan0.14146-arctan34.502441-arctan0.296019+arctan(1/1.3×7.073)+arctan(1/7.073×7.073)
        =-90-arctan0.84876-arctan0.14146-arctan34.502441-arctan0.296019+arctan5.440771+arctan(1/7.073×7.073)
        =-90-arctan0.84876-arctan0.14146-arctan34.502441-arctan0.296019+arctan5.440771+arctan1.000002
        =-90-0.703774-arctan0.14146-arctan34.502441-arctan0.296019+arctan5.440771+arctan1.000002
        =-90-0.703774-0.140528-arctan34.502441-arctan0.296019+arctan5.440771+arctan1.000002
        =-90-0.703774-0.140528-1.541821-arctan0.296019+arctan5.440771+arctan1.000002
        =-90-0.703774-0.140528-1.541821-0.287801+arctan5.440771+arctan1.000002
        =-90-0.703774-0.140528-1.541821-0.287801+1.389028+arctan1.000002
        =-90-0.703774-0.140528-1.541821-0.287801+1.389028+0.785399
        =-90.703774-0.140528-1.541821-0.287801+1.389028+0.785399
        =-90.844302-1.541821-0.287801+1.389028+0.785399
        =-92.386123-0.287801+1.389028+0.785399
        =-92.673924+1.389028+0.785399
        =-91.284896+0.785399
        =-90.499497
    答案:-90-arctan(0.12×7.073)-arctan(0.02×7.073)-arctan(1/0.205×7.073)-arctan(1/23.894×7.073)+arctan(1/1.3×7.073)+arctan(1/7.073×7.073)=-90.499497
    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！