22°18′×5=______ 90°-57°23′27″=______ 33°25′除2=_______ 32.48°=_____°______′_____″72°23′42″=______°
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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〃______′
22°18′×5=______ 90°-57°23′27″=______ 33°25′除2=_______ 32.48°=_____°______′_____″72°23′42″=______°
22°18′×5=______ 90°-57°23′27″=______ 33°25′除2=_______ 32.48°=_____°______′_____″72°23′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=______°_____′__
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=______°_____′__
34.37°=______° ______’______”
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
78°36〃-57°19′40〃=______
28.3°=______°______′,43°36′=_______°
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=______
看图填空,并在括号内注明理由,如图,BD平分∠ABC(已知)∴∠______=∠______(______)∵∠1=∠D(已知) ∴______∥______(______)∴∠ABC+∠______=180°(______)∵∠ABC=55°(已知) ∴∠BCD=_
22.5°=______度_____分;12°24′=____________°请列出算式
简单的计算.35度25′36″=______° 90°-58°25′48″=______
Rt△ABC中,∠C=90°,SinA=4/5 ,AB=10,则BC=______
57.18°=_____度______分______秒
39.145°=______度______分_______秒
计算:15°37′+42°51′=______.
计算72°35′÷2+18°33′×4=______.