在△ABC中,已知∠BAC=90°,AB=6,若D点在斜边BC上,CD=2DB,则
·
的值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c91649a5bea2518387a2b36e0c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d036188ce294e3c7427d0b7d2294fd2.png)
2012高三上·上海·学业考试 查看更多[3]
(已下线)2012届上海市十三校高三上学期第一次联考试题文科数学(已下线)2013-2014学年江苏省江宁高级中学高一下学期期末模拟数学试卷(已下线)2013-2014学年江苏省江宁高级中学高一下学期期末模拟数学试卷1
更新时间:2016-12-01 13:45:31
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