> 数学 >
30°19′21〃+15°40′42〃
人气:182 ℃ 时间:2020-05-24 20:44:02
解答
30°19′21〃+15°40′42〃
=(30+15)°(19+40)'(21+42)"
=45°59'63"
=45°60'3"
=46°0'3"
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版