①34°25′×3+35°42′ ②(180°-91°32′24″)÷3 具体过程,谢谢~~

问题描述:

①34°25′×3+35°42′ ②(180°-91°32′24″)÷3 具体过程,谢谢~~

34°25′×3+35°42′
=102°75′+35°42′
=137°117′
=138°57′
(180°-91°32′24″)÷3
=(180°59‘60’‘-91°32′24″)÷3
=89°27′36″÷3
=87°147′36″÷3
=29°49′12″