在锐角
中,
和
满足的关系式为
求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b025ab88540118f570acc08a61642ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
更新时间:2023-10-29 14:57:09
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相似题推荐
解答题-问答题
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【推荐1】如图,一只蚂蚁从点
沿数轴向右爬了2个单位长度到达点
,点
表示
,设点
所表示的数为
.
(1)实数
的值是__________;
(2)在数轴上还有
,
两点分别表示实数
和
,且
与
互为相反数,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620a90f37c04548cec41a396dc3793b5.png)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/21/ec500874-b001-4128-9d47-8ea52c2efa92.png?resizew=222)
(1)实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)在数轴上还有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a9a8a9fc7462a9619619f40d35af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260e3961170a38895594e6726d3042c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620a90f37c04548cec41a396dc3793b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a8f8cc194f72c4e08fa7cc57dbd272.png)
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解答题-问答题
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较易
(0.85)
【推荐1】如图,将矩形纸片ABCD按如下顺序进行折叠: 对折、展平, 得折痕EF(如图①); 沿GC折叠, 使点B落在EF上的点B′ 处(如图②); 展平, 得折痕GC(如图③); 沿GH折叠, 使点C落在DH上的点C′ 处(如图④); 沿GC′ 折叠(如图⑤); 展平, 得折痕GC′、GH(如图⑥).
![](https://img.xkw.com/dksih/QBM/2021/11/27/2860174314930176/2864724662657024/STEM/4600b068-8884-4df8-98cc-bf38bfd72a8b.png?resizew=467)
(1)求图②中∠BCB′ 的大小;
(2)图⑥中的△GCC′ 是正三角形吗?请说明理由.
![](https://img.xkw.com/dksih/QBM/2021/11/27/2860174314930176/2864724662657024/STEM/4600b068-8884-4df8-98cc-bf38bfd72a8b.png?resizew=467)
(1)求图②中∠BCB′ 的大小;
(2)图⑥中的△GCC′ 是正三角形吗?请说明理由.
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解答题-问答题
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较易
(0.85)
【推荐2】在
中,
,
、
、
分别是
、
、
的对边,解下列直角三角形:
(1)
,
;
(2)
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08273b2b425ca0aadd7f7aee75253a7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b661053e5478d982f36407eca6fbf325.png)
您最近一年使用:0次