解题方法
1 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763d061631872c611d5662f7229127a6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b44ed068bce3a71927cf342fe06e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763d061631872c611d5662f7229127a6.png)
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解题方法
2 . 已知角
是斜三角形
的三个内角,下列结论一定成立的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.![]() | B.![]() |
C.若![]() ![]() | D.![]() |
您最近一年使用:0次
3 .
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1a6bf62fc79177e12afc0783a2dc4f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b764b55c82b68b377175ed7422bbe527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
5 . 已知
.
(1)求
的值.
(2)求
的值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536e072eb0439a5e5b430cd55a129374.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c684f5c1cfb58c8729fbc075cee649.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a478e03877fd76050b8af0bf205d0e8c.png)
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6 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfcc3e32b6393e6465876e10cd86529.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
7 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60a06f6d8a62020785155cb91212e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba4099214de730a5f4c322d4e1310b7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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8 . 已知
,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e309b13d393cc482e1f75954c95d98b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046387911745f43ff3b6804ea58eb26a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9da049c686ff81df5d6645ef51e993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e309b13d393cc482e1f75954c95d98b.png)
您最近一年使用:0次
名校
解题方法
9 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e202b9804b62714eae1c1618f0219e9.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
10 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f69e9e1950074543768e7e066f2be2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次