解题方法
1 . 已知
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a2f6d370ed6f1d6582251c6e1bad62.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
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名校
解题方法
2 . 记
的内角
的对边分别为
为
上一点,且
.
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fc1540cb6983b728dc877b8f9f7fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0124a1b3f5f842d47bfd519ff1ba6015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444ff91027cd44acd2834c85aa3b0ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.8 | B.9 | C.12 | D.14 |
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解题方法
3 . 在
中,角
的对边分别为
,且
.
(1)求
的值;
(2)若
为锐角三角形,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78340a3105486043276458198f548f6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ecc3aaae2aa289591a3b632f1e0645.png)
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4 . 函数
(
,
,
)的部分图象如图,
和
均在函数
的图象上,且Q是图象上的最低点.
的单调递增区间;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fcd3cea5f5e2fe943490dcb65d74c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e1734dcc7697235124fbaba4ba6033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083169a97d6babe52eca51c2ed0aefb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c426f776a2e72a8300512bf52c35ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9271992646b7bb71e0841d9d57912cf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920f7b809091d270731c50849a4388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f8c00c0bf7344ba3bc7984516d3d18.png)
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5 . 已知复数
在复平面内对应的点在虚轴的正半轴上,复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db5c1993bdf3e6ce4810533d62c90de.png)
(1)求
,
的值;
(2)求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa925e867d123a41814d16e77e9b59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db5c1993bdf3e6ce4810533d62c90de.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17ca1e9283fc7ac1b1e427ef0310fc2.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c529ba8284ac452d88405f8dfc3b316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
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6 . 定义:
.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c8894e0b37af5da23a1c1bffb32017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f9d41306133d059e2daa28edd6d824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ec7c99202b44d5d65239f65f155b6f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知
,
,其中
,
.
(1)求
的值;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2e2c779a79ea66d6d134b3f3e65003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03106022757d2899b6cf2c0455e263eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6d589e032939e6135174eac55aa7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3741c462a9186a80fcf1a3d7f6fa989c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b3adfb25816cf11f7760d868c29cb7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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8 . 在
中,若
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54028f07f1e039fc140aac0d6c3bf86a.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
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解题方法
9 . 在
中,内角A,B,C的对边分别为a,b,c,且
的面积为1,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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解题方法
10 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2ef4a759417f0f8074f96fdb5fdcb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d45c243d18b3c631dc5d7c950b7abe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次