2011·山东济南·一模
解题方法
1 . 如图,在△ABC中,
=![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/64b4e553f6704bf98a713ff7c525bc7a.png?resizew=15)
,P是BN上的一点,若
=m
+![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/c62ffe76cbad41c0ae8a6b196c0faaa0.png?resizew=20)
,则实数
的值为___________ .
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/68013629082a41a18c2e40f492e2062f.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/64b4e553f6704bf98a713ff7c525bc7a.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/6fc9ea46f82e4f328d96a1ea55cb5ae2.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/eac4d8b79ed04c1cba6c1ba6f021d619.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/8a4413c134b34cf2b082673a51285f27.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/c62ffe76cbad41c0ae8a6b196c0faaa0.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2011/2/27/1570016886710272/1570016891936768/STEM/58535105944b485fafd8638252fbcdfb.png?resizew=28)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2012/1/2/1570671644237824/1570671649628160/STEM/3c9ae504d23f47b085b9385cab810466.png?resizew=129)
您最近一年使用:0次
10-11高一下·辽宁·期中
解题方法
2 . 在
中, 若
是
的内心,
的延长线交
于
, 则有
称之为三角形的内角平分线定理, 现已知
,
,
,且
, 求实数
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42774a918f52ac8aa8b1f5b78a676f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5ca418ff0d36929cd06551f74d58c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a7ab01c268636edd1f131758f029b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2011/8/8/1570281338781696/1570281344286720/STEM/0c73464ac8374f74a8421d923e90c4e0.png?resizew=238)
您最近一年使用:0次
10-11高一下·福建·期末
解题方法
3 . 如图,已知
中,点
为线段
的中点,点
是线段
上的点,且
,
和
交于点
,设
,
.
![](https://img.xkw.com/dksih/QBM/2011/7/11/1570252298780672/1570252304252928/STEM/95b8b433-0a8a-4f86-b052-5c4c01389445.png?resizew=143)
(1)用
、
表示向量
、
;
(2)若
,
,求实数
、
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02b0e4c73c66ca8edc3c2997df8348e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9cb32a25c2a8bb99f75633b4cd5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049131856ba841523793ee3d83099014.png)
![](https://img.xkw.com/dksih/QBM/2011/7/11/1570252298780672/1570252304252928/STEM/95b8b433-0a8a-4f86-b052-5c4c01389445.png?resizew=143)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af955728e5c838b4a5f79aa089c72cd0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d52c0ad3b33db5dd88cde2ae34357dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71eaf07d63479aa1f6e0d88843ec28df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
9-10高一上·吉林·期末
4 . 已知
的三个顶点
及平面内一点P满足:
,若实数
满足:
,则
的值为
![](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/1d8da1c45a993e5549f3d18a0dd79713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beda5f5533576e40faddee10e199899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.3 | B.![]() | C.2 | D.8 |
您最近一年使用:0次