1 . 化简下列各式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eea059262a504e602db5582de080f93.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab3dca2d957190916d56e4eafbfabd6.png)
您最近一年使用:0次
解题方法
2 . 已知角
的终边经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46902ee9fbd30111d7831f1fc7b79641.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ceaea1c9f99458c286d49ec95d150c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46902ee9fbd30111d7831f1fc7b79641.png)
您最近一年使用:0次
名校
3 . 若扇形的圆心角为
,半径为6,则扇形的弧长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
您最近一年使用:0次
解题方法
4 . 已知
,则角
的终边所在的象限为第( )象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56345d105348d62d9c1cdf4ff903b6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.一 | B.二 | C.三 | D.四 |
您最近一年使用:0次
5 . 某林场为了及时发现火情,设立了两个观测点A和B.某日两个观测点的林场人员都观测到C处出现火情.在A处观测到火情发生在北偏西
方向,而在B处观测到火情在北偏西
方向.已知B在A的正东方向
处,那么火场C与A距离约为___________
.(结果精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36581140ebac5d28438ea63b1b23b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc9600d011c14315338e99623269d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36b7bffda85107582b021928dbd4d3c.png)
您最近一年使用:0次
解题方法
6 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c7e086c3ab30df4d79870ae9a3cce5.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3442de0573a140970cbaffc82e1122f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c7e086c3ab30df4d79870ae9a3cce5.png)
您最近一年使用:0次
7 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950655420ae7cae5fbd606e3604864ab.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba16587e556088a35c71f522f988671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950655420ae7cae5fbd606e3604864ab.png)
您最近一年使用:0次
解题方法
8 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b21c1ca840ac0f0c4715160fb29753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
您最近一年使用:0次
9 . 设
,若函数
的.定义域为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3fa587a9b2e1c9fe82750db0ec22fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd210a5fe44d2d93c98ab6e7a153d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803066e3fe042831652d29d563516679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
您最近一年使用:0次
10 . 若扇形的圆心角为
,半径为4,则其弧长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
您最近一年使用:0次