28.3°=______°______′,43°36′=_______°

34.37°=______° ______’______” 28.3°=______°______′,43°36′=_______° 18°______′24°______′32°______′11′______〃19′______〃22′______〃0.2′______°0.6′______°0.4′______°0.46〃______′0.39〃______′1.24〃______′三题，很抱歉。0.4〃______′0.3〃______′1.2〃______′ 57.18°=_____度______分______秒 39.145°=______度______分_______秒 (>______ ______ 56°25′12〃=______度 一、在△ABC中,∠C=90°（1）若已知a、∠A,则∠B=______,b=______,c=______.（1）若已知c、∠B,则∠A=______,a=______,b=______.（1）若已知b、∠A,则∠B=______,a=______,c=______.（1）若已知c、∠A,则∠B=______,a=______ 余角和补角20°的余角为______,补角为______.17°的余角为______,补角为______.70°32′的余角为______,补角为______.32°51′18〃的余角为______,补角为______. . 观察以上数据你能得到怎样的结论?你能用a 度分秒运算 16.7°=____°_____′_____ 76°32′24=______°_____′______ 32°27′18=________°43°35′49＋56°45′24＝______°_____′______56°25′24－43°35′29＝______°_____′______69°－57°36′42＝______°_____′__ 度分秒运算 16.7°=____°_____′_____ 76°32′24=______°_____′______ 32°27′18=________°43°35′49＋56°45′24＝______°_____′______56°25′24－43°35′29＝______°_____′______69°－57°36′42＝______°_____′__ 一往无前成语接龙一往无前______,______,______,______,______,______,______,______,______,______,______,左右逢源,______,______,______,______,______,______,______,______,______,神清气爽 明哲保身 ______ ______ ______ ______ ______ 如图,已知ab//cd,∠1=70°则∠2=______ ,∠3=______ ,∠4=______. 简单的计算.35度25′36″=______° 90°-58°25′48″=______ whose is it?=_____ ______ ______ _____ ______?whose are they?=_____ ______ ______ _____ ______? cos20°×cos40°×cos80°=______