名校
解题方法
1 . 已知
为钝角,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6c1b28cdf7c6ce783154e05b57b2c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78d7cee1769295ccf05c1c87e240b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 已知
是第二象限角,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d661561f57ede74586fd03f51e5b6a5a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaee5b737069fc6b71dd58ee0a59366b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d661561f57ede74586fd03f51e5b6a5a.png)
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3 . 为了推导两角和与差的三角函数公式,某同学设计了一种证明方法:在直角梯形ABCD中,
,
,点E为BC上一点,且
,过点D作
于点F,设
,
.
(1)利用图中边长关系
,证明:
;
![](https://img.xkw.com/dksih/QBM/2023/6/20/3263775491006464/3265425842176000/STEM/d80ec35b6b4c44ad9d54317146a5675c.png?resizew=47)
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d8397018b0a01a1b4e9574604f9e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5427b7b994b860628df3d6b7a07de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa30a9ee227af2b387cf6e028c20d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a447d8fc6919edd758ccec4277435aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21461e9cb1265843a16d379788f3fcb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/24/b7c91a13-25b3-41d4-9180-c25f2539ec0f.png?resizew=133)
(1)利用图中边长关系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8904ac51eff2df308ed7b6a07aa2477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8b8ee28cf91c5976d074d233c941f3.png)
![](https://img.xkw.com/dksih/QBM/2023/6/20/3263775491006464/3265425842176000/STEM/d80ec35b6b4c44ad9d54317146a5675c.png?resizew=47)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952ab659a747b410974aa88748f18d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff423fa9846e49124710a2add054a8f.png)
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4 . 已知角
的顶点与坐标原点
重合,始边与
轴的非负半轴重合,终边过点
.(点
不与原点
重合)
(1)若
,求
的值;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea37e0b5c2451f78a4c742f79ae3087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95204eafbdaae2947268b18c340eff20.png)
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名校
解题方法
5 . 已知正实数
,
满足
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f371d431b6c91972b742c426c8a81ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001a1689236d3d908317efe09e137d47.png)
A.0 | B.![]() | C.![]() | D.![]() |
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2022-09-29更新
|
456次组卷
|
7卷引用:浙江省杭州第十四中学2021-2022学年高一上学期期末数学试题
浙江省杭州第十四中学2021-2022学年高一上学期期末数学试题浙江省普通高中强基联盟2022届高三上学期统测数学试题河南省新郑市2021-2022学年高二上学期第一次阶段性检测数学(文)试题河南省新郑市2021-2022学年高二上学期第一次阶段性检测数学(理)试题(已下线)7.3 三角函数的图象和性质(5)江西省抚州市东乡区实验中学2022-2023学年高一下学期期中数学试题(已下线)5.5.2简单的三角恒等变换(分层作业)-【上好课】
名校
6 . 若存在函数
满足
,则
可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf6aefea0eaf6a1b4a9803c91dd72ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a89930cb6e4a657c61bbf2af98279db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-16更新
|
892次组卷
|
4卷引用:浙江省杭州第二中学滨江校区2021-2022学年高一上学期期末数学试题
名校
解题方法
7 . 已知
,
,且
,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbe8b4bcd32e5a64ebfd873f8cbb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc36f1850fb5308496d5a44dcb1bf41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa558d74cfc40ba4a8086e2c498ea8ce.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8114e78ac5798c981a09a8d282875f99.png)
您最近一年使用:0次
2022-01-22更新
|
796次组卷
|
2卷引用:浙江省绍兴市2021-2022学年高一上学期期末数学试题
名校
解题方法
8 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0215997906c54e26fc01c97bb1894c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
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2022-01-22更新
|
5007次组卷
|
8卷引用:浙江省宁波市2021-2022学年高一上学期期末数学试题
名校
解题方法
9 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff8e8f399db20c51e878b2b4b134793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a52275b5d86853274a6b03be3c7ec89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
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2022-01-21更新
|
1803次组卷
|
4卷引用:浙江省杭州市八县区2021-2022学年高二上学期期末学业水平测试数学试题
浙江省杭州市八县区2021-2022学年高二上学期期末学业水平测试数学试题浙江省杭州求是高级中学2021-2022学年高二上学期期末数学试题浙江省温州市瑞安中学2021-2022学年高二下学期期初测试数学试题(已下线)第02讲 同角三角函数的基本关系及诱导公式(讲+练)-2023年高考数学一轮复习讲练测(新教材新高考)
名校
解题方法
10 . 在平面直角坐标系
中,锐角
、
的顶点为坐标原点
,始边为
轴的正半轴,终边与单位圆
的交点分别为
、
.已知点
的横坐标为
,点
的纵坐标为
.
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897859802144768/2899360184147968/STEM/519b84c5-5887-4e6d-a6bc-893c19934808.png?resizew=178)
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd92f594c348f7a956607f7b381cc22a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897859802144768/2899360184147968/STEM/519b84c5-5887-4e6d-a6bc-893c19934808.png?resizew=178)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b04da7eac640b5b735da7fb5da8cfd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfea1e888676a13ad69c72fba0405ea.png)
您最近一年使用:0次
2022-01-21更新
|
957次组卷
|
3卷引用:浙江省杭州市八县区2021-2022学年高一上学期期末学业水平测试数学试题