计算:⑴48°39'+67°31';⑵21°17'×5.
- 教育综合
- 2023-08-08 07:57:09
计算:48°39′+67°31′-21°17′×5=______
48°39′+67°31′-21°17′×5 =48°39′+67°31′-106°25′ =116°10′-106°25′ =9°45′. 故答案为:9°45′. |
计算48°39’+67°31’-21°17’乘5等于多少
48°39’+67°31’-(21°17’)5 =116°10‘ - 106°25’ =9°45‘48°39′+67°31′=? 180°-21°17′×5=? 都要过程
48°39′+67°31′ = (48°+67°)+(39′+31′) =115°70′ =116°10′ 180°-21°17′×5 =180°-(21°×5+17′×5) =180°-(105°+85′) =180°-106°25′ =179°60′-106°25′ =(179°-106°)+(60′-25′) =73°35′ (过程够详细了吧?其中有些步骤是可以省略的。)展开全文阅读