2014·全国·一模
1 . 如图,在△ABC中,BD=2DC.若
,
,则
=( )
![](https://img.xkw.com/dksih/QBM/2014/5/15/1571723251007488/1571723256496128/STEM/8d7485e75e5946a0b295db07bae34151.png?resizew=152)
![](https://img.xkw.com/dksih/QBM/2014/5/15/1571723251007488/1571723256496128/STEM/a7d686e304f94b50bad1092f16147b62.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2014/5/15/1571723251007488/1571723256496128/STEM/4e35fce22dc54b93b02eebf44ab58406.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2014/5/15/1571723251007488/1571723256496128/STEM/465c1af8299a46a99f36a277457d1147.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2014/5/15/1571723251007488/1571723256496128/STEM/8d7485e75e5946a0b295db07bae34151.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
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11-12高一下·广东云浮·期中
2 . 给出下面的三个命题,其中正确的命题个数为
①函数
的最小正周期是![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/bdd73b6bd447497285fa6a9d307f5a2e.png)
②函数
在区间
上单调递增
③
是函数
的图象的一条对称轴.
①函数
![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/68b16403d5954b6c9deb9f71ceb3015e.png)
![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/bdd73b6bd447497285fa6a9d307f5a2e.png)
②函数
![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/90b449b2ba914bab89d7104b0246d65d.png)
![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/1612035c9d9d474ab938ee43e98c5343.png)
③
![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/b0b8f1a703064100ba148a57082be386.png)
![](https://img.xkw.com/dksih/QBM/2012/6/5/1570880096321536/1570880101539840/STEM/d09454211fd440bf8568d1fa5fc5cf31.png)
A.0 | B.1 | C.2 | D.3 |
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11-12高三·陕西咸阳·阶段练习
3 . 已知向量
,且
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a3254ee301f3d1f57a872c20a4effb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31307a434d9bd734c863b3aee1f9705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e7c1e7a7b4a9570af9c9a82e6b374c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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11-12高一下·甘肃武威·期中
4 . 若2弧度的圆心角所对的弧长为4cm,则这个圆心角所夹的扇形的面积是
A.4 cm2 | B.2 cm2 | C.8 cm2 | D.2πcm2 |
您最近一年使用:0次
5 . 已知点
是圆:
上的动点,点
,
,
是以坐标原点为圆心的单位圆上的动点,且
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab653ffa6acf8b28096ff54719579d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa5694373bd78b1ca2180f831bf1c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2252dec4cf2fd59caff617269567806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b7e01c8145d0db8aaab7ad5bed9d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0417a0809f424529950cb5e0898a8f4a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
413次组卷
|
2卷引用:2016届陕西省高三高考全真模拟(五)考试数学(理)试卷
6 . 已知D是
ABC所在平面内一点,
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e033f67841bcb481db65d3ce495f0b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13a6bbde5db87be8d2f091a37c19a2d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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12-13高三·广东广州·开学考试
解题方法
7 . 将函数
的图像向右平移
个单位,那么所得的图像所对应的函数解析式是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d60c405025a2d9c29dc12b886bbcd88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-08-23更新
|
29次组卷
|
11卷引用:2013-2014学年陕西省宝鸡中学高一上学期期末考试数学试卷
(已下线)2013-2014学年陕西省宝鸡中学高一上学期期末考试数学试卷陕西省西安市周至县第四中学2023-2024学年高一上学期期末数学试题(已下线)2014届广东省广州市海珠区高三入学摸底考试理科数学试卷(已下线)2015届广东省阳东一中、广雅中学高三第一次考试文科数学试卷2017-2018学年湖北省荆州中学、宜昌一中等“荆、荆、襄、宜四地七校考试联盟”高三10月联考理科数学(理)(详细)【市级联考】湖北省天门市、潜江市2018-2019学年高一12月月考数学试题重庆市北碚区2019-2020学年高一上学期11月联考数学试题浙江省绍兴市蕺山外国语学校2019-2020学年高一下学期4月教学质量检测数学试题(已下线)[新教材精创]第5章三角函数练习(2) -人教A版高中数学必修第一 册吉林省吉林地区普通高中友好学校联合体第三十届基础年段2019-2020学年高一下学期期末联考数学试题(已下线)BBWYhjsx1020.pdf
9-10高一下·陕西渭南·阶段练习
8 .
等于
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572205183311872/1572205188726784/STEM/9367c146f18e4d47b47d8ecad2d3d8c8.png)
A.sin2-cos2 | B.cos2-sin2 |
C.±(sin2-cos2) | D.sin2+cos2 |
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2013·陕西·模拟预测
9 . 如图,已知圆
:
,四边形
为圆
的内接正方形,
、
分别为边
、
的中点,当正方形
绕圆心
转动时,
的取值范围是
![](https://img.xkw.com/dksih/QBM/2013/5/24/1571228399681536/1571228405129216/STEM/6c0cff1e768b4284a94a5877175a0c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2013/5/24/1571228399681536/1571228405129216/STEM/053d0d7efba94867a846e1b4311a0452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2013/5/24/1571228399681536/1571228405129216/STEM/1d083c0883b6406e8b97624310c847f1.png)
![](https://img.xkw.com/dksih/QBM/2013/5/24/1571228399681536/1571228405129216/STEM/6c0cff1e768b4284a94a5877175a0c00.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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