143°15′38〃+24°27′22〃;90°32″-46°20′52″;180°-(25°18′+65°56′);2
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/10/10 09:31:02
143°15′38〃+24°27′22〃;90°32″-46°20′52″;180°-(25°18′+65°56′);28′3″×2+46.8°÷6
143°15′38″+24°27′22″
=(143°+24°)+(15′+27′)+(38″+22″)
=167°+42′+60″
=167°+42′+1′
=167°+43′
=167°43′
90°32″-46°20′52″
=89°60′32″-46°20′52″
=89°59′92″-46°20′52″
=(89°-46°)+(59′-20′)+(92″-52″)
=43°+39′+40″
=43°39′40″
180°-(25°18′+65°56′)
=180°-[(25°+65°)+(18′+56′)]
=180°-(90°+74′)
=180°-90°-74′
=90°-74′
=88°+(120′-74′)
=88°+46′
=88°46′
28′3″×2+46.8°÷6
=(28′×2)+(3″×2)+7.8°
=56′+6″+7°+0.8×60′
=56′+6″+7°+48′
=7°+(56′+48′)+6″
=7°+(60′+44′)+6″
=7°+60′+44′+6″
=7°+1°+44′+6″
=8°+44′+6″
=8°44′6″
=(143°+24°)+(15′+27′)+(38″+22″)
=167°+42′+60″
=167°+42′+1′
=167°+43′
=167°43′
90°32″-46°20′52″
=89°60′32″-46°20′52″
=89°59′92″-46°20′52″
=(89°-46°)+(59′-20′)+(92″-52″)
=43°+39′+40″
=43°39′40″
180°-(25°18′+65°56′)
=180°-[(25°+65°)+(18′+56′)]
=180°-(90°+74′)
=180°-90°-74′
=90°-74′
=88°+(120′-74′)
=88°+46′
=88°46′
28′3″×2+46.8°÷6
=(28′×2)+(3″×2)+7.8°
=56′+6″+7°+0.8×60′
=56′+6″+7°+48′
=7°+(56′+48′)+6″
=7°+(60′+44′)+6″
=7°+60′+44′+6″
=7°+1°+44′+6″
=8°+44′+6″
=8°44′6″
143°15′38〃+24°27′22〃;90°32″-46°20′52″;180°-(25°18′+65°56′);2
26°32′53〃+15°48′15〃= 80°-27°15′35″= 18°46′28″×3= 78°25′12″÷4
(1)180°-(25°18′+65°56′) (2)(31°40′-25°4′30″)x3+28′3″x2
20°35′27″*4;100°-36°18′52″;16°23′35″÷5;80°32′15″+90°27′45″;在
(1)80°32′15″+90°27′45″(2) 100°-36°18′52″ (3)54°36′18″×三分之二(4
计算53°18′36″-16°51′ 80°32′15″+90°27′45″ 16°51′+38°27′×3-90°
(1)180°-58°39′2〃-33°29′24〃=?(2)78°8′15″除以5=?(3)13°56′乘8=?
12°32′42〃+26°18″
18°32′56〃x6 74°23′36″÷6
90°-81°32′18〃=8°27′42″过程是什么?解题思路是什么?
136°17′15〃-98°36′45〃= 56°35′46″-16°15′14″= 16°15′14″= 109°11
80°32′15″+90°27′45″ 100°-36°18′52″ 54°36′18″×三分之二 57°30′÷5 过