来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/06 04:06:20
计算:52°22′×9 178°53′÷5 的具体解法
52°22′×9
=52°×9+22′×9
=468°+198'
=468°+180'+18'
=468°+3°+18'
=471°18'
178°53′÷5
=(178°+53′)÷5
=(175°+3°+53′)÷5
=(175°+180'+53′)÷5
=(175°+233′)÷5
=(175°+230'+3′)÷5
=(175°+230'+180")÷5
=175°÷5+230'÷5+180"÷5
=35°+46'+36"
=35°46'36"