1 . 已知
,
,则![](https://img.xkw.com/dksih/QBM/2016/6/13/1572738626854912/1572738632433664/STEM/7f3a3c04bf5c4d27a16475e5989063f8.png)
![](https://img.xkw.com/dksih/QBM/2016/6/13/1572738626854912/1572738632433664/STEM/908679e66bb64234bd1c888984822a70.png)
![](https://img.xkw.com/dksih/QBM/2016/6/13/1572738626854912/1572738632433664/STEM/263685c8639d41ab8c15a2739c69aa23.png)
![](https://img.xkw.com/dksih/QBM/2016/6/13/1572738626854912/1572738632433664/STEM/7f3a3c04bf5c4d27a16475e5989063f8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知函数
,若将其图象向右平移
个单位后所得的图象关于原点对称,则
的最小值为
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572504846286848/1572504852094976/STEM/6f57147158fa40e4b1f0f1a19ba46c5d.png)
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572504846286848/1572504852094976/STEM/9868f5627331483c86caf57c694ba47a.png)
![](https://img.xkw.com/dksih/QBM/2016/2/29/1572504846286848/1572504852094976/STEM/c064805b9f4d488992d2ea2ac73e2539.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f06a002a861a5a11be6842fd075a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 .
的值为
![](https://img.xkw.com/dksih/QBM/2016/6/13/1572738626854912/1572738632458240/STEM/9424b4fe04644b8b81ee8cb2933824d6.png)
A.0 | B.![]() | C.1 | D.![]() |
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名校
解题方法
5 . 在
中内角A,B,C的对边分别为a,b,c,满足
,
,D为AC上一点且满足 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a428233496c5e21f2c20ebaf0c312e.png)
则BD的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4fa8099927f6664057322a1c087142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715c3978c454777672e14a72298317a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a428233496c5e21f2c20ebaf0c312e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05250abe6da85eb0b555948d7dbaf317.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 已知
,
,且
,
均为锐角,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a077ceccea768ed3c664d38d55242fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06397fbd8b97298fc8bf8f1f42e21d92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知在
中,角
所对的边分别为
.内角
为等差数列,若
边上的中线长为
,且
的面积为
,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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](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/2c94bb12cee76221e13f9ef955b0aab1.png)
A.2 | B.3 | C.4 | D.5 |
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8 . 已知函数
,则![](https://img.xkw.com/dksih/QBM/2016/6/21/1572762882621440/1572762888249344/STEM/9033120b46f34ef9afd653ea727430ef.png)
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572762882621440/1572762888249344/STEM/ae353542a23e452e829e38aa8d597fcd.png)
![](https://img.xkw.com/dksih/QBM/2016/6/21/1572762882621440/1572762888249344/STEM/9033120b46f34ef9afd653ea727430ef.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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14-15高三上·贵州遵义·阶段练习
9 . 已知
,则tanα=
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572520146329600/1572520152080384/STEM/fafda4ef1e4c4a92911a80607d4c9796.png)
A.﹣1 | B.![]() | C.![]() | D.1 |
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10 . 将函数
的图象向左平移
(
)个单位,再将所得图象上各点的横坐标缩短为原来的
(
)倍,纵坐标不变,得到函数
的图象,已知函数
是周期为
的偶函数,则
,
的值分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a63dcb02f1deec84428715b2ad1750e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cada4595e617c68c84c8081c2f70dcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d2fc11f3f136cedde0e1bbc0055b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5face02dd25bac1c09875e0e486b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8b1052b2d548a9d8b584ecca5057bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8542e50495795c98f7aa7501fe0690a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cada4595e617c68c84c8081c2f70dcb.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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