1 . 南海作为我国不可分割的蓝色领土,维护南海主权权益是我国必须坚持的基本立场,如图,南海某岛的海岸线为一段圆弧,其对应的圆心角
.该岛为打击域外船只的骚扰,在海岸线外侧30海里内的海域
对不明船只进行识别查证.在圆弧的两端点
,
分别建有监测站,已知两监测站的直线距离为120海里.
的面积;
(2)现海面上点
处有一艘不明船只,在监测站
测得不明船只距离
点60海里处,在监测站
测得不明船只距离
点海里
处,试判断该不明船只是否进入海域
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0f4a227754facf7d5aee67d230c0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)现海面上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808ba09ba2473dc86ebd04b13ab627ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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解题方法
2 . 球面几何在研究球体定位等问题有重要的基础作用.球面上的线是弯曲的,不存在直线,连接球面上任意两点有无数条曲线,它们长短不一,其中这两点在球面上的最短路径的长度称为两点间的球面距离.
纬线,赤道以北叫做北纬.如图1,将地球看作球体,假设地球半径为
,球心为
,北纬
的纬线所形成的圆设为圆
,且
是圆
的直径,球面被经过球心
和点
,
的平面截得的圆设为圆
,求圆
中劣弧
的长度,并判断其是否是
,
两点间的球面距离(只需判断、无需证明).
(2)如图2,点
,
在球心为
的球面上,且
不是球的直径,试问
,
两点间的球面距离所在的圆弧
是否与球心
共面?若是,写出证明过程,并求出当
,
时,
,
两点间球面距离所在的圆弧
与球心
所形成的扇形
的面积;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d495d88b8e51f89e2e4da27328025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/240d929040e21e7991481149b73a79a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93ef48e154646ef0564de14a990c2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c467c10aa2eabce3af68c1213d88043b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c880639a6164aa127cf38b63aebde50.png)
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3 . 如图,
是半圆
的直径,
为
中点,
,直线
,点
为
上一动点(包括
两点),
与
关于直线
对称,记
为垂足,
为垂足.
的长度为
,线段
长度为
,试将
表示为
的函数,并判断其单调性;
(2)记扇形
的面积为
,四边形
面积为
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2859a53a15cd08e75e6516489948b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b455b110a30c1533d0a0657e0e48ac33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.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/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14abdcd76e14b2fc1abce40b2b1bfe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b7affe747f630ba39abaaff2a080a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9382f3fa0be7e9180546910d579046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02521cd9fa700ef34feeed81c320211f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)记扇形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161ea3eaa2e28747507c1c0e4a7b39f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d918361b03a48660dbd5987cd7a7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e6151dc6ef89bc79b1ca0dc63b291e.png)
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2024-04-15更新
|
281次组卷
|
4卷引用:江苏高二专题03导数及其应用
江苏高二专题03导数及其应用江苏省苏州市2023-2024学年高二下学期4月期中调研数学试题(已下线)模块五 专题4 全真能力模拟4(人教B版高二期中研习)福建省龙岩市上杭一中2023-2024学年高二下学期5月月考数学试卷
4 . 英国数学家泰勒发现了如下公式:
,
,其中
.这些公式被编入计算工具,计算工具计算足够多的项就可以确保显示值的精确性.
(1)用前三项计算
;
(2)已知
,
,
,试比较
,
,
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e001efee18e05afab241c12334d98cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba15a427babacf319deb9c4dd8d58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7ce15cf27e4aec8abddd8b495a30f2.png)
(1)用前三项计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb0821260d845231f860baeabd68eeb.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa20a3f02e6430d94120e9df5eaaa70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695cf64b357d24bc88ea669ad8f1de57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabd3c4a5fd9278fea6546a52a7a6653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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解题方法
5 . “但有一枝堪比玉,何须九畹始征兰”,盛开的白玉兰是上海的春天最亮丽的风景线,除白玉兰外,上海还种植木兰科的其他栽培种,如黄玉兰和紫玉兰等.某种植园准备将如图扇形空地AOB分成三部分,分别种植白玉兰、黄玉兰和紫玉兰;已知扇形的半径为70米,圆心角为
,动点P在扇形的弧上,点Q在OB上,且
.
(2)当
米时,求PQ的长;
(3)综合考虑到成本和美观原因,要使白玉兰种植区
的面积尽可能的大.设
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8d7771b82429dcd6b48b768918c7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9ab90788bfa77a7287d14ce54efb02.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4d476faf357f6499ff47a73a298c83.png)
(3)综合考虑到成本和美观原因,要使白玉兰种植区
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/867d00157025729b6a66380810466edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
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2024-03-26更新
|
838次组卷
|
7卷引用:6.4.3.2?正弦定理15种常考题型归类(2)-高频考点通关与解题策略(人教A版2019必修第二册)
(已下线)6.4.3.2?正弦定理15种常考题型归类(2)-高频考点通关与解题策略(人教A版2019必修第二册)上海市建平中学2023-2024学年高一下学期第一次教学质量检测(3月月考)数学试卷(已下线)6.4.3.2 正弦定理——课后作业(基础版)广东省广州市育才中学2023-2024学年高一下学期期中数学试题重庆市青木关中学校2023-2024学年高一下学期第一次月考模拟数学试卷安徽省六安市第二中学河西校区2023-2024学年高一下学期期中考试数学试题河南省焦作市第一中学2023-2024学年高一下学期期中考试数学试题
名校
6 . 某中学为美化校园将一个半圆形边角地改造为花园.如图所示,
为圆心,半径为
千米,点
、
、
都在半圆弧上,设
,
,其中
.
、
、
三部分组成,求当
取何值时,参观的线路最长;
(2)若在花园内的扇形
和四边形
内种满杜鹃花,求当
取何值时,杜鹃花的种植总面积最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cded3be0e3c88a3f00550eacd4f313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297f91f8de05cd18a6053b675836d59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f63ceea8e3338aea834d5f8187f80f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c023f4b501684abd869b36d6e6c7f21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若在花园内的扇形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f11db05569a88a3da8d4b635d0ff94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fcc14ccfc36cf709bf5a4aa32dfa00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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2024-03-23更新
|
257次组卷
|
7卷引用:5.3.2课时3导数在解决实际问题中的应用 第一练 练好课本试题
(已下线)5.3.2课时3导数在解决实际问题中的应用 第一练 练好课本试题(已下线)2.7导数的应用(分层练习)-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)(已下线)导数及其应用-综合测试卷A卷(已下线)解三角形-综合测试卷A卷上海市浦东新区建平中学2024届高三上学期11月质量检测数学试题上海市松江一中2024届高三下学期阶段测试1数学试题福建省宁德市古田县第一中学2023-2024学年高二下学期第一次月考数学试卷
7 . 玉雕在我国历史悠久,拥有深厚的文化底蕴,数千年来始终以其独特的内涵与魅力深深吸引着世人.如图1,这是一幅扇形玉雕壁画,其平面图为图2所示的扇形环面(由扇形OCD挖去扇形OAB后构成).已知该扇形玉雕壁画的周长为320厘米.
厘米.求该扇形玉雕壁画的曲边
的长度;
(2)若
.求该扇形玉雕壁画的扇面面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99062939bbafa88573f295df38b9215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7af5a7fa70dba85cffab71662cd0d2.png)
您最近一年使用:0次
2024-03-21更新
|
267次组卷
|
4卷引用:第7章:三角函数章末综合检测卷-【帮课堂】(人教B版2019必修第三册)
(已下线)第7章:三角函数章末综合检测卷-【帮课堂】(人教B版2019必修第三册)(已下线)第一章三角函数章末十九种常考题型归类(1)-【帮课堂】(北师大版2019必修第二册)河南省南阳地区2023-2024学年高一下学期3月阶段性检测数学试题贵州省遵义市遵义市四城区联考2023-2024学年高一下学期4月月考数学试题
2024高一下·上海·专题练习
8 . 如图,有一个扇环形花圃
,外圆弧的半径是内圆弧半径的两倍,周长为定值
,圆心角的绝对值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/01c8d834-db44-4a6d-8ad1-9d09e7e389b8.png?resizew=155)
(1)当
为多少弧度时,扇环面积最大,并求出最大面积;
(2)当
时,求弧
的中点
到弦
的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400d0f1815cb5953b1221ce690caef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a998a7d4d980e848ee050b706480ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/01c8d834-db44-4a6d-8ad1-9d09e7e389b8.png?resizew=155)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb80c0e955d5be2a4af9006d36347b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
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2024高一下·上海·专题练习
9 . 设扇形的圆心角为
,半径为
,弧长为
.
(1)已知一扇形的周长为
,面积是
,求扇形的圆心角
;
(2)若扇形周长为
,将扇形的面积
表示为半径
的函数,并写出定义域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)已知一扇形的周长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce710269ec0786472cad1bb73ee7d3ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac6426a3ea12d9be734ec274d3a15a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若扇形周长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe9f7abf7bcf4e1aa2579cd191d7761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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解题方法
10 . 某学校校园内有一个扇形空地AOB(
),该扇形的周长为
,面积为
,现要在扇形空地AOB内部修建一矩形运动场馆CDEF,如图所示.
(2)取CD的中点M,记
.
(i)写出运动场馆
的面积S与角
的函数关系式;
(ii)求当角
为何值时,运动场馆
的面积最大?并求出最大面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769802f5d47115693ccbb6a693924efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e0b44d48835dedb37a3a26e5ca95a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417432b2ba4ca0c43b2674a78123a1ae.png)
(2)取CD的中点M,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b235ef42e996bf87775e1c448f1b1f84.png)
(i)写出运动场馆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779c26a41987ef67c2f09812c4f15ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(ii)求当角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779c26a41987ef67c2f09812c4f15ac4.png)
您最近一年使用:0次
2024-02-06更新
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249次组卷
|
4卷引用:8.2.4三角恒等变换的应用-同步精品课堂(人教B版2019必修第三册)
(已下线)8.2.4三角恒等变换的应用-同步精品课堂(人教B版2019必修第三册)(已下线)8.2.4 三角恒等变换的应用-【帮课堂】(人教B版2019必修第三册)安徽省部分重点中学2023-2024学年高一上学期期末测试数学试卷内蒙古呼和浩特市回民区2023-2024学年高一下学期期中考试数学试题