已知
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a802c5eed453a1bc91ff695d79c5a734.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460ccafe4761c9acf6eccdd9a848d42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a802c5eed453a1bc91ff695d79c5a734.png)
17-18高一下·上海宝山·期中 查看更多[4]
上海市宝山区淞浦中学2017-2018学年高一下学期期中数学试题上海市复兴高级中学2023届高三上学期开学考数学试题(已下线)第07讲:第四章+三角函数(测)(基础拿分卷)重庆西南大学附属中学校2023届高三上学期第三次月考数学试题
更新时间:2022-09-26 19:29:29
|
相似题推荐
填空题-单空题
|
较易
(0.85)
解题方法
【推荐1】若等腰三角形的顶角的余弦值等于
,则这个三角形底角的正弦值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f3077d603cfe0ddf1ea896f0cbab6e.png)
您最近一年使用:0次
填空题-概念填空
|
较易
(0.85)
【推荐3】诱导公式
(1)诱导公式一:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce36b0c59b9d2cc944cac7b788389d8.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f3d9a498df0f05fae8fe60b43a6aaa.png)
___________ ,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae23b9413de040705fad0d25bd03ae2f.png)
___________ ,其中
.
(2)诱导公式二
①角
与角
的终边关于__________ 对称,如图所示.
②公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7bf5dc296c85f86d2ca8b64b480147.png)
_____________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f759ee0def2d1a6fb88753c9ef07cae.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba836563e68eca878b59a9a55280c882.png)
____________ .
(3)诱导公式三
①角
与角
的终边关于___________ 轴对称,如图所示.
②公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d4000ea4ce9aea7958d27fde4f214e.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950655420ae7cae5fbd606e3604864ab.png)
____________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c6471dcada2d0e4b9efef09bde303f.png)
___________ .
(4)诱导公式四
①角
与角
的终边关于___________ 轴对称,如图所示.
②公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078e71df78f4009c753e7f87c0aeb22f.png)
_____________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6225b7e5cab57cfde4042011fe4bbcd.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade79e7ac8b0d9ca0300ca390f8c9f8e.png)
___________ .
(5)诱导公式五、六
(6)诱导公式五、六可用语言概括
①函数值:
的正弦(余弦)值,分别等于
的________ 函数值.
②符号:函数值前面加上一个把
看成锐角时原函数值的符号.
(1)诱导公式一:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce36b0c59b9d2cc944cac7b788389d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f3d9a498df0f05fae8fe60b43a6aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae23b9413de040705fad0d25bd03ae2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a173784888adf2946382fa093ba53a.png)
(2)诱导公式二
①角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680ecbff0dee20c07525c70278d066a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/00c47f4e-6807-4032-9a09-8a480fd34660.png?resizew=140)
②公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7bf5dc296c85f86d2ca8b64b480147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f759ee0def2d1a6fb88753c9ef07cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba836563e68eca878b59a9a55280c882.png)
(3)诱导公式三
①角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2256b0609359cf7ebd52153066926177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/4b56c18d-9251-49ea-939a-68539ccdaaff.png?resizew=140)
②公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d4000ea4ce9aea7958d27fde4f214e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950655420ae7cae5fbd606e3604864ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c6471dcada2d0e4b9efef09bde303f.png)
(4)诱导公式四
①角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95372129246c60c75829c34bb5d9d429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/fc388acd-aeca-48f3-aee7-43deee7c9958.png?resizew=140)
②公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078e71df78f4009c753e7f87c0aeb22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6225b7e5cab57cfde4042011fe4bbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade79e7ac8b0d9ca0300ca390f8c9f8e.png)
(5)诱导公式五、六
![]() | 公式五 | ![]() ![]() |
![]() | 公式六 | ![]() |
①函数值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb825553989430b197aac5a101cf141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
②符号:函数值前面加上一个把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
【推荐1】在
中,内角
、
、
所对的边分别为
、
、
,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1813aa92d2379664c36eb440ef7506fc.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/604909374f8967d8fb8bfd903c11e830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1813aa92d2379664c36eb440ef7506fc.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐2】若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b3a74bec89aa74fc75261f53d2aec6.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267673356c89b0e0416016b67704268e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b3a74bec89aa74fc75261f53d2aec6.png)
您最近一年使用:0次