1 . 如图,设单位向量
,
的夹角
,非零向量
的模
,且
,求
在基
下的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9debf8cd2a04736d9ab4c7fe1e72095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95763e154888a080b3b96ff7fb3b39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67677d41d5fb92f1e8e967bbf5c299e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943c6d8f9ec4197ce91c8c18cf2f4c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95763e154888a080b3b96ff7fb3b39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a341ba62373f3286b0a3425cbc3f79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/18/e0531448-face-4acf-887f-c0842b728450.png?resizew=170)
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2 . 求下列各三角函数值:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662a9660a659d247c7632024ebb7bbc4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e3279477629f9b101c82ab077c3bbc.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87fe52ec8bef05697ba0caaf4ee2515f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787d60791f918bae844eb14c9ca2120d.png)
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3 . 求下列各三角函数值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2a500e492f30ac2ff61a944caadf62.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e80c6b84bba661b0dc354d72711a0a.png)
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解题方法
4 . 利用正弦线、余弦线、正切线研究各象限角的三角函数的符号.
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解题方法
5 . 求角
的正弦、余弦和正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc6717eb211df1271b490622746590.png)
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解题方法
6 . 如图已知角
的终边经过点
,求
的正弦、余弦和正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570a136ae27fe3ef6d3e0a4a1624486f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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7 . 确定下列三角函数值的符号:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe50c6bfb383abe2c5bb1b317d83bec.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3df99fc895580415bffa587ed1db56.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb88c3ad16263c4628eee02fa4e23a2.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85083901a8ce2a7e6a8cc25d6e3d9747.png)
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8 . 确定下列三角函数值的符号:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17da7c7706b8ee10778c8db575315043.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9559cf40651f7aa01584b3d00920768a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969155d28cf61113460076de8e91555c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866c374e044b899f397f11c45766e236.png)
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9 . 作出下列各角的正弦线、余弦线、正切线:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb1b58c4a9762c6e74a98f25e3b5e61.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7bb725e102380813a942cd53ea31a4.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec98eebd0af0cea6241c70458ae0050a.png)
您最近一年使用:0次
2023-09-27更新
|
160次组卷
|
4卷引用:苏教版(2019)必修第一册课本习题 习题7.2
苏教版(2019)必修第一册课本习题 习题7.27.2 三角函数概念(1)-【帮课堂】(苏教版2019必修第一册)(已下线)7.2.2单位圆与三角函数线-高一数学同步精品课堂(人教B版2019必修第三册)(已下线)7.2.2 单位圆与三角函数线-【帮课堂】(人教B版2019必修第三册)
10 . 求值:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f0c21181776c024029c1b9ea612d83.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fc7539116cf8041c277185555b966c.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b9eb57a536cbc44a800dfb9880d115.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490fb23d16c70ffa755fe353cd19d144.png)
您最近一年使用:0次