1 . 已知
分别为
三个内角
的对边,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
______ ;若
,
,
,
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eb4f079ec739c81a07d11a0939834b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12dcfb8f3fc0ac45d50782c3f248672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2187ee1ea3b7e47a6283314322e5decf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6c03c053e0d74a04dd5142f0c37fc6.png)
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解题方法
2 . 已知向量
,
,
,
且
,
,
三点共线.
(1)求实数
的值;
(2)若四边形
是平行四边形,其中点
的坐标为
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3748ddba58d11ff3837a70732aedfa3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58af3385c59c6657ecbb4188ba2c1de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50fad33a90c3f77f2a7703a14168f1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b10c478cddd42d15458392083a08a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c39c16d3c056a9627afbc9501e3f8b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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解题方法
3 . 如图,四边形
是边长为1的正方形,延长CD至E,使得
.动点P从点A出发,沿正方形的边按逆时针方向运动一周回到A点,
,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58783e347a9e5fca04df67e16708f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd749e516a3f5094b0fa8d95015c7704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
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解题方法
4 . 已知
,平面向量
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e87088da41685cc8d433fbbe0e18d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a61daeddc396d1376bf64e784e5429e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237e21416b2f708820b2a39b5749d245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af88a7628c71d642d3a6df067c15f5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在平行四边形
中,
,
,对角线
与
交于点O,则
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b60d20ad6b0fec4735341027b47b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30556dfc185536eb52a7d56bbd3a2b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef2723673c90347f6dd58346278c7fa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 已知双曲线
,过点
的直线交双曲线
于
两点,交
轴于点
(
点与双曲线
的顶点不重合),若
,则当
时,点
坐标为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b30352c43707c4e54b94ce5b61f2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00ddb03d17350a8a35b9fb847551a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5d1996c10a267af688a127f7d0711b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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解题方法
7 . 已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e82e6a84171c2fd73f7c0dd184b0294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec82bb7819c525d78685b376d7e31c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.1 | C.![]() | D.![]() |
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解题方法
8 . 如图,在平面直角坐标系中,点O为坐标原点,
,
,
,
,AD与BC交于点M.
,试用
,
表示
,
;
(2)E为线段BD上的一个动点,若
的面积等于四边形ABDC面积的一半,求此时
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d879e563e308068f7937f08a0478f2d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd6d9dcd3010c5adcb69021e21f3dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a37340dca83b30ec219bb3cdae1554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0ae332eea4612a1c6fce5a92939beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2067059e64f4eed47402548ea94b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a046d7060dc843c78af806ee24f556.png)
(2)E为线段BD上的一个动点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f33a112e9728d7b560199765c815f69.png)
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解题方法
9 . 已知双曲线
的右顶点为
,双曲线
的左、右焦点分别为
,且
,双曲线
的一条渐近线方程为
.
(1)求双曲线
的标准方程;
(2)已知过点
的直线与双曲线
右支交于
两点,点
在线段
上,若存在实数
且
,使得
,证明:直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7638c88f01d609d79947033ed4ff36a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4f7e7f33963df24d6a46067b4677e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cc81cfaccc00aa4b7139de5a35a102.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915651fc9cdae8de0bf6fddbaad641d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ebaa32f4f1f4f807ca9aeb7fb29951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844da174d67557f7a44c0962d51189b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56a9870ee77ce3930c6692af93bc7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5b93bb37d6c91b75148995efeb3690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec18c028746b73be7503ff6ff458a8c.png)
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10 . 已知向量
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69a01e3ad53c876213ab567ab56d7ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07bd57dd68879c0d78a2c42b9e724584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5493e8acc0092f0f5c496be21eaf7f0b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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