如图是一盏可调节台灯,如图为示意图.固定支撑杆
底座
于点O,
与
是分别可绕点A和B旋转的调节杆,台灯灯罩可绕点C旋转调节光线角度,在调节过程中,最外侧光线
、
组成的
始终保持不变.现调节台灯,使外侧光线
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9454959fd953ac3d66f2a325a553f432.png)
_____ .
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23-24七年级上·四川乐山·期末 查看更多[6]
四川省乐山市市中区2023-2024学年七年级上学期期末数学试题四川省成都市泡桐树中学2023-2024学年七年级下学期3月月考数学试题(已下线)专题02 平行线模型及动态问题(七大题型)-【好题汇编】备战2023-2024学年七年级数学下学期期中真题分类汇编(山东专用)(已下线)上海市七年级下学期期中模拟02(沪教版:实数、相交线平行线、三角形有关概念与性质)-2023-2024学年七年级数学下学期期中考点大串讲(沪教版)山东省济南市天桥区2023-2024学年七年级下学期期中数学试题(已下线)专题03 平行线中的拐点问题期末真题汇编【五大模型+优选提升题】-备战2023-2024学年七年级数学下学期期末真题分类汇编(人教版)
更新时间:2024-02-15 17:18:51
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