90°-Arctan(40/250)等于多少度?

问题描述:

90°-Arctan(40/250)等于多少度?

90°-Arctan(40/250)
=90°-9.09°
=90°-9°5‘40“
=80°54’20”Excel电子表格=ATAN(0.16)=0.15870.1587x180°/3.14=9.09°