解题方法
1 . (1)若正实数
,
满足
,求
的最小值.
(2)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306e3eb5c1c221f172a6d69fe5b96102.png)
(3)化简求值:已知
,求
.
![](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/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306e3eb5c1c221f172a6d69fe5b96102.png)
(3)化简求值:已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd77451f0d3c5c012d15f57bf9bcf9d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d31bd85b98cf8a02f430048e9ab142.png)
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解题方法
2 . 在平面直角坐标系
中,角
的始边为
轴的非负半轴,终边经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2eb4369b1a7fcf28e56f5703ae9966.png)
(1)求
的值和
;
(2)化简求值
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2eb4369b1a7fcf28e56f5703ae9966.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简求值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f224e2e7ac85f4ae55c4fd0a9fb6123.png)
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2024-01-21更新
|
886次组卷
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3卷引用:江苏省扬州市广陵区红桥高级中学2023-2024学年高一上学期12月月考数学试卷
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解题方法
3 . 已知
,且
为第二象限角.
(1)求
,
的值;
(2)化简
,并求值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9da049c686ff81df5d6645ef51e993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27014901b91b1941a106e3f0bbca84e.png)
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解题方法
4 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ccb49239ecc5eb9062fd85aeddcce9.png)
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b61e22083e790774ff7edec135a2a42.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ccb49239ecc5eb9062fd85aeddcce9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b61e22083e790774ff7edec135a2a42.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6f323b5287e5310a9e3e6a6f2a5cc7.png)
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解题方法
5 . 已知
,且α是第 象限角.
从①一,②二,③三,④四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
,
的值;
(2)化简求值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969b106918cf44777d177a0538da8cb3.png)
从①一,②二,③三,④四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简求值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b540238b451437bb9c126b1264ac90a.png)
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解题方法
6 . (1)化简求值:
;
(2)已知向量
,向量
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51c603cb46a4d8de32be3e9965d8457.png)
(2)已知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7549e79109c3a0bbc47f0da806467857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffcc21ffa986fd2a5d15134490bd32a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa49dbaa99a0d7a7a6d18b3fe42091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05020c805738490d494c47bf4380fe7a.png)
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2023-08-10更新
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202次组卷
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2卷引用:河南省新乡市红旗区新乡市第一中学2022-2023学年高一下学期3月月考数学试题
22-23高一下·北京大兴·期中
解题方法
7 . 已知
,且
是第__________限角.
从①一,②二,③三,④四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
,
的值;
(2)化简求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
从①一,②二,③三,④四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c29497dda3b8965a0bb25d96dc596d1.png)
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解题方法
8 . 用相关公式或运算性质对下列式子进行必要的化简并求值.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120cb15e72b6cd3d2bf7e402b6d5b622.png)
(2)已知
,求
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120cb15e72b6cd3d2bf7e402b6d5b622.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63ad20c7f449d744d06955b302b9e55.png)
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9 . 如图,在平面直角坐标系
中,第二象限角
的终边与单位圆交于点A,且点A的纵坐标为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d36429990cc317010d33c0e8f86233a.png)
的值;
(2)先化简再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e514bc1761deff47d27c1909c1906ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d36429990cc317010d33c0e8f86233a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d181b9371c5543bdb1df2b0d6eefb7fe.png)
(2)先化简再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5bb9161ec6defdb0ba9e4b0bfb855c.png)
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2023-01-16更新
|
546次组卷
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3卷引用:四川省绵阳市南山中学实验学校2022-2023学年高一下学期2月月考数学试题
10 . 已知
,且α是第________象限角.
从① 一,② 二,③ 三,④ 四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
的值;
(2)化简求值:
.
注:若选择多个条件分别解答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7fdccadfa7469825f8a5ccbf495c24.png)
从① 一,② 二,③ 三,④ 四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)化简求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a61e718de14108e2346f3f63c09c76.png)
注:若选择多个条件分别解答,则按第一个解答计分.
您最近一年使用:0次