21°27''34''×3 109°11'4''÷765°53''26''+37°14'53''106°27''30''-98°25'42''23°25'24''×7102°48'21''÷3已知∠A=143°26'29'',∠B=96°41'24'' (1)求∠A+2∠B (2)∠A-1/2∠B153°19'42''+26°40'28''90°3''-57°21'44''33°15'16''×5175°16'30''
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/23 10:40:03
21°27''34''×3 109°11'4''÷765°53''26''+37°14'53''106°27''30''-98°25'42''23°25'24''×7102°48'21''÷3已知∠A=143°26'29'',∠B=96°41'24'' (1)求∠A+2∠B (2)∠A-1/2∠B153°19'42''+26°40'28''90°3''-57°21'44''33°15'16''×5175°16'30''
21°27''34''×3 109°11'4''÷7
65°53''26''+37°14'53''
106°27''30''-98°25'42''
23°25'24''×7
102°48'21''÷3
已知∠A=143°26'29'',∠B=96°41'24'' (1)求∠A+2∠B (2)∠A-1/2∠B
153°19'42''+26°40'28''
90°3''-57°21'44''
33°15'16''×5
175°16'30''-47°30'÷6
21°27''34''×3 109°11'4''÷765°53''26''+37°14'53''106°27''30''-98°25'42''23°25'24''×7102°48'21''÷3已知∠A=143°26'29'',∠B=96°41'24'' (1)求∠A+2∠B (2)∠A-1/2∠B153°19'42''+26°40'28''90°3''-57°21'44''33°15'16''×5175°16'30''
21°27''34''×3
＝63°81''102''
＝63°82''42''
＝64°22''42''
109°11'4''÷7
≈15°27'18''
65°53''26''+37°14'53''
＝（65+37）°+（53+14）'+（26+53）''
＝（65+37）°+（53+14）'+1'+19''
＝（65+37）°+1°+8'+19''
＝103°8'19''
106°27''30''-98°25'42''
＝（106-98）°+（27-25）'+（30-42）''
＝8°+2'-12''
＝8°+1'+48''
＝8°1'48''
23°25'24''×7
＝161°+175'+168''
＝161°+175'+2'+48''
＝161°+2°+57'+48''
＝163°57'48''
102°48'21''÷3
＝34°16'7''
已知∠A=143°26'29'',∠B=96°41'24''
(1)求∠A+2∠B
∠A+2∠B
＝143°26'29''+96°41'24''×2
＝143°26'29''+192°82'48''
＝（143+192）°+（26+82）'+（29+48）''
＝335°108'77''
＝335°109'17''
＝336°49'17''
(2)∠A-1/2∠B
∠A-1/2∠B
＝143°26'29''-96°41'24''÷2
＝143°26'29''-48°20'42''
＝（143-48）°+（26-20）'+（29-42）''
＝95°+6'-13''
＝95°5'47''
153°19'42''+26°40'28''
＝（153+26）°+（19+40）'+（42+28）''
＝179°+59'+70''
＝179°+60'+10''
＝180°10''
90°3''-57°21'44''
＝（90-57）°+（0-21）'+（3-44）''
＝33°-39'-41''
＝33°-40'+19''
＝32°+20'+19''
＝32°20'19''
33°15'16''×5
＝165°45'80''
＝165°46'20''
175°16'30''-47°30'÷6
＝175°16'30''-7°55'
＝（175-7）°+（16-55）'+30''
＝168°-39'+30''
＝167°+21'+30''
＝167°21'30''
65°53''26''+37°14'53''=8°5′48″
102°48'21''÷3=34°16′7″
65°53''26''+37°14'53''=102°67'79''=103°8'19''