名校
解题方法
1 . 已知曲线.
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da570b85be54e1194ca485d4751abfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed983f366396f988a3090fbf14ce696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①试问是否为定值?若是,求出该定值;若不是,请说明理由.
②若直线与
轴分别交于点
,证明:
.
您最近一年使用:0次
解题方法
2 . 已知双曲线:
,
,
,直线
与
有唯一公共点
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
您最近一年使用:0次
名校
3 . 如图,在四棱锥
中,底面
是边长为2的菱形,
,
.
;
(2)若二面角
为
,求平面
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e0b64d25ddd18454f88e40c45d7d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b01fa08bfa35362d4cfabcbe1c01458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0063f3f48e49f2970ec7f097567cef5.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d399d731913a563e291b817831a0c678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a12c461765806bbfb872e7e8aa410c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745e0525a41fe2e2a7739c75a942290b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955e030d649a3c7885071b4bf849993c.png)
您最近一年使用:0次
2024-03-21更新
|
1671次组卷
|
4卷引用:河北省沧州市泊头市联考2024届高三下学期高考模拟考试数学试题
河北省沧州市泊头市联考2024届高三下学期高考模拟考试数学试题河北省张家口市2024届高三一模数学试题(已下线)第七套 艺体生新高考全真模拟 (一模重组卷)(已下线)专题06 空间直线﹑平面的垂直(一-《知识解读·题型专练》(人教A版2019必修第二册)
4 . 如图,在三棱台
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/3710d003-fb29-471a-af5c-43b24f3de348.png?resizew=181)
(1)证明:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c20287386583c8ee11b44b1af0de5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2106309ce73b6cfc480fe0389c1c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354c20e085fe1a99a8be03bd1d16b2f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/3710d003-fb29-471a-af5c-43b24f3de348.png?resizew=181)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8e94ba1dfb62069fb125be98d2498a.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
您最近一年使用:0次
2024-03-17更新
|
1871次组卷
|
6卷引用:河北省百师联盟2024届高三下学期开学摸底联考数学试题
5 . 已知圆
,定点
,D是圆A上的一动点,线段DB的垂直平分线交半径DA于点E.
(1)求点E的轨迹方程;
(2)若直线m与点E的轨迹交于M,N两点,与圆
相交于P,Q两点,且
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db913f194627b21fae0c9ceaf40033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513eafd10fa1ec0196562865517e0b09.png)
(1)求点E的轨迹方程;
(2)若直线m与点E的轨迹交于M,N两点,与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcc2501b8ea3dd150e3d8f02f0bd174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
名校
解题方法
6 . 已知空间四棱锥
中,
,
.
(1)求证:平面
平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fba380b4a02fc29fc4e3d43ebed85c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482e223b93d1539b160e03b4f9b82703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217031788a3cc1f1402ee8bbd8e5835f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/0d9375db-2aa7-4f2d-91cf-6a835e7a7a55.png?resizew=160)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1f07df5692e4c4e2db643aefdd0d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9503e4c6915f292371e8f60d49e4363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c15eecc6efaac26dd74b8f539d93bcf.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,三棱柱
中,侧面
为矩形,底面ABC为等边三角形.
;
(2)若
,
,
①证明:平面
平面ABC;
②求平面ABC与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cb1df353c6907fec5823964eef36c6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844b54fac727753d81a6be086330c9e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35909b72f6e48a33ae9abb1d63ff91aa.png)
①证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
②求平面ABC与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
您最近一年使用:0次
2024-03-14更新
|
970次组卷
|
3卷引用:河北省唐山市2024届高三下学期第一次模拟演练数学试题
名校
解题方法
8 . 如图,已知平行六面体
的棱长均为
.
(1)证明:
;
(2)延长
到
,使
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141b28af2c8d6d3a0433e07a1f2c5899.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/da76d086-78a7-4c2d-a5e9-a3ef37c3d473.png?resizew=170)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e735911ba4cd7f8fca6b3f65d705b573.png)
(2)延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72935dfeb6c0a429f9da8accdeccccb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
您最近一年使用:0次
2024-03-14更新
|
1124次组卷
|
2卷引用:河北省2023-2024学年高三下学期省级联测考试(3月)数学试题
名校
9 . 在四棱锥
中,平面
底面
,
.
是否一定成立?若是,请证明,若不是,请给出理由;
(2)若
是正三角形,且
是正三棱锥,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e1de129bfc451f4c7160cc50666ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe0ccf24d760c77535a70c92dad145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2024-03-14更新
|
701次组卷
|
4卷引用:2024届河北省雄安新区部分高中高考三模数学试题
2024届河北省雄安新区部分高中高考三模数学试题河南省开封市2024届高三下学期第二次质量检测数学试题(已下线)第三套 艺体生新高考全真模拟 (二模重组卷)广东省深圳市福田区红岭中学2024届高三高考适应性考试数学试卷
名校
10 . 如图,在四棱锥
中,四边形
为直角梯形,
,
,平面
平面
,
,点
是
的中点.
.
(2)点
是
的中点,
,当直线
与平面
所成角的正弦值为
时,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c6caa0455442437177ab9b995df37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3402ea855e2ae2dcd98f607bef4fdd6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb11df029afb11e4233989b1338cb3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fadb231dad32489d5e543d4b71ac3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9f84a3289f4a973d7ad823e35c0841.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bacde79b2d53b9a47b73c4376b1032e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee188333e1fa99417aede565c6a4a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924d32b574fe69e43724304cf39513e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c6caa0455442437177ab9b995df37b.png)
您最近一年使用:0次
2024-03-14更新
|
1141次组卷
|
3卷引用:河北省正定中学2023-2024学年高二下学期第一次月考数学试题