在
中,角A的角平分线交
于点D,且
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659b3c18ca52e5e356d8ea0fa283eaad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
22-23高一下·宁夏银川·阶段练习 查看更多[2]
更新时间:2023-07-30 13:04:57
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单选题
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适中
(0.65)
名校
解题方法
【推荐1】已知
的内角
所对的边分别为
,若
,则
的形状一定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.等腰三角形 | B.直角三角形 | C.等腰直角三角形 | D.等腰或直角三角形 |
您最近一年使用:0次
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适中
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【推荐2】已知锐角
中,角A,B,C的对边分别为a,b,c,
,若
存在最大值,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b19988d792b5252222f0a7acf7ef5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b85662754571d5e137541c06c913a765.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
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【推荐1】在
中,
,则
为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59720e6f3016ad9b1b084b9c5ec5b12d.png)
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A.4 | B.3 | C.![]() | D.5 |
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适中
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【推荐2】在
中,已知
是
边上一点,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5aabf85659ac8509bb76a9f0d5c87d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.2 | B.1 |
C.-2 | D.-1 |
您最近一年使用:0次