名校
解题方法
1 . 已知△ABC的内角A,B,C的对边分别为a,b,c,且
,
.
(1)求B;
(2)若△ABC为锐角三角形,求△ABC面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaf5160162137ffcdcb348cdf797eef.png)
(1)求B;
(2)若△ABC为锐角三角形,求△ABC面积的取值范围.
您最近一年使用:0次
2023-11-10更新
|
951次组卷
|
2卷引用:辽宁省大连市金州高级中学2023-2024学年高三上学期期中考试数学试题
2 .
的内角
,
,
的对边分别为
,
,
,分别以
,
,
为边长的三个正三角形的面积依次为
,
,
.已知
,
.
(1)求
的值
(2)若
,求边
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.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/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/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c73c2735140b9de21c7d33e65ed68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a62e94cb7425cfc2d7afdc4b5aa5f0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa6361e919ac07ee6ed642556e1d1ae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa2af7625546de3040d8d79fe79f6b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2023-11-10更新
|
166次组卷
|
2卷引用:广西壮族自治区玉林市2023-2024学年高二上学期11月期中考试数学试题
解题方法
3 . 在
中,
.
(1)求
;
(2)再从条件①、条件②、条件③这三个条件中选择两个作为已知,使
存在且唯一确定,求
的面积.
条件①:
;
条件②:
;
条件③:
.
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多组符合要求的条件分别解答,按第一组解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155ecc4a22a0933429ed61e214a7aa27.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)再从条件①、条件②、条件③这三个条件中选择两个作为已知,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe4d0cfca55a9129e18b65659ed5821.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3f0ef69ff6b52e5f028965ba7b0cee.png)
条件③:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ebb2603c1da90c22e0abdd5131b0be.png)
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多组符合要求的条件分别解答,按第一组解答计分.
您最近一年使用:0次
4 . 在①
,②
,③
这三个条件中任选一个,补充在下面的问题中,并解答问题:
在
中,内角
的对边分别为
,且满足_______________.
(1)求角
的值;
(2)若
的面积为
,点
在边
上,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310e2dcd183b06532f8274d4ca64e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4680450786914f54bde2581cdbe16a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04b82e15370e5561df0fa86adf81937.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604d037b88148502a5608e0285c76f35.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/50196d293a863fe2f9e46199052ab8c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
解题方法
5 . 在
中,角A,B,C所对的边分别为a,b,c.已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2e34a4adaf87ba52790f88a211a6cd.png)
.
(1)证明:
;
(2)求a;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2e34a4adaf87ba52790f88a211a6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2c90d58215831b341f7fb68545a5e0.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(2)求a;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b919f0869717376807ca5481f17412.png)
您最近一年使用:0次
解题方法
6 . 在
中,已知
.
(1)求
;
(2)若
的面积为
,
,求AB的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca360f427f9332158fe3245c148e4d1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4fd4871453331ca8f15aa0efc5a93d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8dc761b1dae978e6648cbe4959abbd.png)
您最近一年使用:0次
2023-11-09更新
|
292次组卷
|
2卷引用:河南省周口市项城市2023-2024学年高三上学期期中数学试题
名校
解题方法
7 . 如图是两个直角三角形板拼成的平面图形,其中
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c0098e82d41438224ce472054e5490.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b6e08fde74010412a6f14ad4dfbcc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43169174312d380aea08df86d4d36a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc849980579cd8b0560d76ba78331ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c0098e82d41438224ce472054e5490.png)
您最近一年使用:0次
解题方法
8 . 已知
中,
,点
在边
上,
三等分
,
靠近
靠近
.
(1)若
,且
,求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d42cb68c5c877a455ba7ac0a6b6a651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9cf954cfee5199ecd6fec55a269d57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063d667b18643dea9ee22a9f651df11a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269643af069b213ea9512da5db7bba5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77b1656b687d3de33fa089c1c90b1f1.png)
您最近一年使用:0次
名校
解题方法
9 . 在等腰直角
中,
为
内一点,
.
(1)若
,求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5ae728fd8d88ff8d6608c3236aff8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c16d7d1e6841e219a11ee155029af27c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2511693d52527b36554f1e6192b3459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59798989a286cbf711be156b28e6b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310580166942baf8aa5c69a12e962678.png)
您最近一年使用:0次