如图,在直角坐标系中,锐角
,
的终边分别与单位圆交于A、B两点,角
的终边与单位圆交于C点,过点A、B、C分别作x轴的垂线,垂足分别为M、N、P.
(1)如果
,
,求
的值;
(2)求证:
.
![](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/b8dc4c63a548b91061528aa11058de75.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/43e3317a-164e-4545-a37d-bff1adec3b1f.png?resizew=172)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca6729421d2ff1ba289b74660c18bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb67fe5a33cbb19500ed8bbbbd175c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323b74b1e7d8a89188b2dfc5d0bc30ec.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb00b051deb8d84964af931d9d7bfdbd.png)
更新时间:2024-02-01 12:23:15
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】角
的始边与
轴的非负半轴重合,终边与如图的单位圆交于点
,将射线
绕点
按逆时针方向旋转
后与单位圆相交于点
,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/db428da3-e9cd-43bb-9487-2fa4b93d9111.png?resizew=176)
(1)求
的值;
(2)若函数
的最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c663466d641b5fdfef1e529d6c330ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166afeb61d5a80366a8ae29c912cd644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11cf11def6bed5e2d57bfd2f26a7f69d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/db428da3-e9cd-43bb-9487-2fa4b93d9111.png?resizew=176)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc10e023f4f70f39dd3da52874ba616.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead294ae4c89c2f8b8c3a2cab18736a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4948adb65d30bc200d0d5d43cd377781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐2】如图,以坐标原点O为圆心的单位圆与x轴正半轴相交于点A,点B,P在单位圆上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efead1d0e9b5d832b8217739fbed13e.png)
![](https://img.xkw.com/dksih/QBM/2018/6/1/1957812978368512/2021430658088960/STEM/b56595a3b1104254ad1118da6f9aeca8.png?resizew=153)
(1)求
的值;
(2)设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a39b29389b5c81950e58746c3c6a15.png)
,四边形
的面积为
,
,求
的最值及此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efead1d0e9b5d832b8217739fbed13e.png)
![](https://img.xkw.com/dksih/QBM/2018/6/1/1957812978368512/2021430658088960/STEM/b56595a3b1104254ad1118da6f9aeca8.png?resizew=153)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d211fb5dd88b51fd26aff9f694b5a6f2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a39b29389b5c81950e58746c3c6a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fd8e58818cefd65e8926e40e6a4df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8501d0d0917907b3b1a3d73516a1d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84ae3adbc3e8f09d0bc3f8e1412e06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd288d4152caf5fc8187a1a901c8949f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)求函数
的最小正周期;
(2)若
且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d322eec2c46be157bf409304e9f2d619.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6363449f064b8aeeaa11ae6e096cb25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53f153f67f327f16c7ed5cd6fc2d4f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5ff5a2e7663e6a21ccea3149a10113.png)
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适中
(0.65)
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解题方法
【推荐2】已知
,
,求:
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0d128592813241dc48115ffb9a7773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d394016b9fecac73f38cbc4ff18dee2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3286884de035d8414d3e4f33236b9e1.png)
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【推荐2】已知函数
.
(Ⅰ)若函数在
上单调递增,求a的取值范围;
(Ⅱ)若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b7b74b1aaaf1028b91d2a37cd54bc4.png)
(Ⅰ)若函数在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff4af6d35f18eb716d0a04c2c1c1eae.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2b4c21e4db4bb7f390c0fe536b6c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d728057215fde8376305073b1d26584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
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