名校
1 . 现给出以下四个命题:
①已知
中,角A,B,C的对边为a,b,c,当
,
,
时,满足条件的三角形共有1个;
②已知
中,角A,B,C的对边为a,b,c,若三角形
,这个三角形的最大角是
;
③设
是两条不同的直线,
,
是两个不同的平面,若
,
,则
;
④设
是两条不同的直线,
,
是两个不同的平面,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34512482dc6ca8f32d80e4b37d64086b.png)
其中正确的序号是__________ (写出所有正确说法的序号).
①已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab1c19b66cda3fb899f06d9a25e973c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1466856bf2570685d3629c1f813748.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c869e8feebbfec1d4bb699691e393e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34512482dc6ca8f32d80e4b37d64086b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73552465f894573a9147f9a81779b5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0258342fb0eff42b5d37cbe42b6c89b.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f157205cb5cb4a538b09d989f2d9ae95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34512482dc6ca8f32d80e4b37d64086b.png)
其中正确的序号是
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2019-04-19更新
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283次组卷
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2卷引用:【全国百强校】吉林省梅河口市第五中学2018-2019学年高一3月月考数学(文)试题