已知
.
(1)若
为第三象限角,求
.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ea55db82683a35eb6f708123a6e582.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba3ed644ddf1c0bcf9b311c014eec0e.png)
更新时间:2020-01-19 17:40:09
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知
,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4306b944f46c6f8820960a57059a393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】已知
,其中
为锐角.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd35c229731192251c110df4880fe31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】求下列各式的值.
(1)
;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066ee3411fa0f5e40d2b209a26d62293.png)
(3)
.
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb02ad73d69ae4777662ad5d849fad1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066ee3411fa0f5e40d2b209a26d62293.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c25ee3342bae4944e15525246fe7e10.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7781334af0b46d94ae9d559e2f0bb881.png)
您最近一年使用:0次
【推荐2】在
中,内角
的对边分别为
、
、
,在条件:①
;②
;③
,从上述三个条件中任选一个作为题目的补充条件,你的选择是______,并解答下面问题:
(1)求角A的大小;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68362c7761514b21daf31c332c64eec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b482c40fce119ea0546602c76a9ac05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec338c84e62e3121b3231dd0f3e7e18.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8dd9eaa6c42cbad47c41284ad246ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知
,
和
均为锐角,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c202a9c27b7ca0d7123557f5c5d31a.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/b8dc4c63a548b91061528aa11058de75.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】在平面四边形
中,
,
,
,
.
(1)求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54a36173cd9b7b28e91619d715cb569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7385a7caee96f0030f1760f70e1150e4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b95d703163eac1f07410045600066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次