问题描述: 15°25′34〃×3=?38°24′36〃=?度,39.28°=?秒. 1个回答 分类:数学 2014-12-03 问题解答: 我来补答 15°25′34〃×3=15°*3+25′*3+34〃*3=45°+75′+[(102〃)/60]=45°+75′+1.7′=45°+76.7′=45°+(76.7′/60)≈45°+1.2783°=46.2783°38°24′36〃=38°+24′+(36〃/60)=38°+24′+0.6〃=38°+24.6′=38°+(24.6′/60)=38°+0.41°=38.41°39.28°=39°+0.28°=39°+(0.28°*60)=39°+16.8′=39°+16′+(0.8′*60)=39°16′48〃 展开全文阅读