纪璇同学晚上6点多钟开始做作业时,她发现钟表上时针和分针的夹角为120°,做完作业后,她发现钟表上时针和分针的夹角还是120°,但这时已近晚7点了,问纪璇同学做作业用了多少时间.(精确到
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 09:43:43
![纪璇同学晚上6点多钟开始做作业时,她发现钟表上时针和分针的夹角为120°,做完作业后,她发现钟表上时针和分针的夹角还是120°,但这时已近晚7点了,问纪璇同学做作业用了多少时间.(精确到](/uploads/image/z/8702166-30-6.jpg?t=%E7%BA%AA%E7%92%87%E5%90%8C%E5%AD%A6%E6%99%9A%E4%B8%8A6%E7%82%B9%E5%A4%9A%E9%92%9F%E5%BC%80%E5%A7%8B%E5%81%9A%E4%BD%9C%E4%B8%9A%E6%97%B6%2C%E5%A5%B9%E5%8F%91%E7%8E%B0%E9%92%9F%E8%A1%A8%E4%B8%8A%E6%97%B6%E9%92%88%E5%92%8C%E5%88%86%E9%92%88%E7%9A%84%E5%A4%B9%E8%A7%92%E4%B8%BA120%C2%B0%2C%E5%81%9A%E5%AE%8C%E4%BD%9C%E4%B8%9A%E5%90%8E%2C%E5%A5%B9%E5%8F%91%E7%8E%B0%E9%92%9F%E8%A1%A8%E4%B8%8A%E6%97%B6%E9%92%88%E5%92%8C%E5%88%86%E9%92%88%E7%9A%84%E5%A4%B9%E8%A7%92%E8%BF%98%E6%98%AF120%C2%B0%2C%E4%BD%86%E8%BF%99%E6%97%B6%E5%B7%B2%E8%BF%91%E6%99%9A7%E7%82%B9%E4%BA%86%2C%E9%97%AE%E7%BA%AA%E7%92%87%E5%90%8C%E5%AD%A6%E5%81%9A%E4%BD%9C%E4%B8%9A%E7%94%A8%E4%BA%86%E5%A4%9A%E5%B0%91%E6%97%B6%E9%97%B4.%EF%BC%88%E7%B2%BE%E7%A1%AE%E5%88%B0)
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