在平面直角坐标系中,对任意角
,设
的终边上异于原点的任意一点
的坐标为
,它与原点的距离是
.我们规定:比值
分别叫做角
的正割、余割、余切,分别记作
,则下列叙述正确的有______ .(填上所有正确的序号)
①
;②
;③
有意义的条件是
;
④
;⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e95dcba475a8e4b581c31c770199aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f07eb2cb32d632bd116ba817f028d5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00765f219084445c59f80d2521126872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10627c960450259200ebff3452274532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48bd75362790c061d70f80de8febc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a0a85f4050c120c8b8f7f687b1b8cf.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8f5bab89f0489b62c45bfe4a37a818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13eb5fce02428740e7a9eb89c5fa6600.png)
更新时间:2024-03-15 22:38:18
|
【知识点】 由终边或终边上的点求三角函数值解读
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解题方法
【推荐1】在平面直角坐标系中,若角
的终边在直线
上,则
=________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a18798408a1b91fdb12deb79f0b562a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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您最近一年使用:0次
填空题-双空题
|
较易
(0.85)
【推荐2】在平面直角坐标系
中,角均以
轴正半轴为始边.已知角
的终边在直线
上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
________ ;已知角
与角
的终边关于直线
对称,且角
与单位圆的交点坐标为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6834a22cc57e6dc022c74eae7dac76.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6834a22cc57e6dc022c74eae7dac76.png)
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