名校
解题方法
1 . 如图,半径为1的扇形
的圆心角为
,点
在弧
上,且
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744f6cde9d70c3e27c36e4ffec81b9c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85af397846e8907d6f95a72837316f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/d5e24a64-2fc2-40bc-88b7-0f43ef83c623.png?resizew=168)
您最近一年使用:0次
名校
2 . 如图,正方形
中,
为
的中点,若
,则
的值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a751c93c21512948a7414b6efafbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1113ccae1ec1a3fb67a02c34c6ba1937.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/db5069d1-701f-4281-a570-80e06bd98a11.png?resizew=130)
您最近一年使用:0次
2017-10-13更新
|
841次组卷
|
5卷引用:江苏省常州北郊华罗庚江阴高中三校2018届高三联考数学(文)试题
3 . 已知数列
中,
,点列
在
内部,且
与
的面积比为
,若对
都存在数列
满足
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6136317c8df5fc1cf4afbf4ff8274d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a2c31317098e295af73389899b66c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f29ce901cddf517a843118f9e71472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe103f073845122c66f22dcb14b711f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d4281e25475e2737cd1f3480bc163f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
您最近一年使用:0次
名校
4 . 如图,在等腰△ABC中,AB=AC=3,D,E与M,N分别是AB,AC的三等分点,且
,则cosA=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d9bd85e980bf37ea85a57e78c2accf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/8927b0ef-4198-410f-9d1a-317d56978b7c.png?resizew=118)
您最近一年使用:0次
2019-12-23更新
|
306次组卷
|
2卷引用:江苏省镇江八校2019-2020学年高三上学期第二次大联考数学试题
名校
解题方法
5 . 在正三棱柱
中,
,点
满足
,其中
,
.
(1)当
时,三棱锥
的体积为______ .
(2)当
时,存在点
,使得
平面
,则
的取值集合为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e44cb429eea46e7ee4320147192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c03c651cf3b88c30981b2ed27d27043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee72261f6901e62dfd0ffe547406544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e2e01346f60857ff635bb766802e57.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2753dc1c83d54044b89e628a7eb247f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aab98011d732d4094e4e881b0bd2bd6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76819195cffab10d81638dd673f3af98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e16f65c3a318220c2f5baac171bbb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4704cbf3d2de2f06a6ee29b3c252109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960966ead5bcb7fa70a3b941e018e45b.png)
您最近一年使用:0次
6 . 如图,在
中,
若
则
=_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3be29684bf51b2c8b16b40c701c06e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12667ef01982c1bd039839df2b4e5a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d285e611381e448100f126c4d7a9b78.png)
![](https://img.xkw.com/dksih/QBM/2018/2/19/1885764276699136/1891463715553280/STEM/6a3f4b56646c438eabcff1c1f819f7e4.png?resizew=209)
您最近一年使用:0次
名校
解题方法
7 . 在平面直角坐标系中,四边形ABCD是平行四边形,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2714c95b28ade4d8b52885c5a893b59.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2d0cedd559c80b64815a207bb93cec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b20184e3d3585a734928542e18509fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2714c95b28ade4d8b52885c5a893b59.png)
您最近一年使用:0次
2020-03-28更新
|
195次组卷
|
4卷引用:2019届江苏省无锡市第一中学高三下学期2月月考数学试题
8 . 平行四边形
中,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2badf898821599520de63ea33c8bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd12c54a4bc6470cd9456cef72d5b8a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
您最近一年使用:0次
解题方法
9 . 如图,在
中,
,
,
,E为
的中点,
与
交于点F,G为
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfab72149ec6081c0295306d3d956a35.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3ae3ea9d8354844aded187f4726543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfab72149ec6081c0295306d3d956a35.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/7800c598-38c4-4470-899b-0591063f4d18.png?resizew=212)
您最近一年使用:0次
名校
10 . 在
中,
,且
,点
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b86d30035dc90d424761a0bc6542dbd.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e29b56159246cc50cfa21ba71241a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421edf2facf034d2199e81c1b1cf5318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b86d30035dc90d424761a0bc6542dbd.png)
您最近一年使用:0次