计算40°16'31"+34°18'42" 34°16'17"-5°16'4"

问题描述:

计算40°16'31"+34°18'42" 34°16'17"-5°16'4"
写明过程

(1)原式=40°34'73”=40°35’13”;
(2)原式=29°0’13”=29°13”.