计算:48°39′+67°31′-21°17′×5

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 08:06:24
计算:48°39′+67°31′-21°17′×5计算:48°39′+67°31′-21°17′×5计算:48°39′+67°31′-21°17′×5原式=(48+67)°(39+31)′-(21×5

计算:48°39′+67°31′-21°17′×5
计算:48°39′+67°31′-21°17′×5

计算:48°39′+67°31′-21°17′×5
原式=(48+67)°(39+31)′-(21×5)°(17×5)′
=115°70′-105°(60+25)′
=115°70′-106°25′
=(115-106)°(70-25)′
=9°45′