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1 . 如图,测量河对岸的塔高
时,选与塔底B在同一水平面内的两个测点C与D,测得
,
,
,并在点C测得塔顶A的仰角为
,则塔高![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
_____ m.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfac9ab1dc776c9ec076ab2a132fcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bcf905f3910d9238a44ef647835b3d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b05dc55968485eed518b416f112c493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e5b86599355b1bb1cf5f9425089655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699130811793408/2699180961406976/STEM/2e80df79-185a-4029-8a87-f5aa56a45199.png?resizew=232)
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2021-04-13更新
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1090次组卷
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6卷引用:四川省内江市威远中学2020-2021学年高一下学期期中考试数学(理)试题