已知角
的顶点与原点
重合,始边与
轴的非负半轴重合,它的终边过点
.
(1)求
的值;
(2)若角
满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c111a7b669770a2cc28e403ade76169.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2614ad4191e539da7c3e8dc0ed37540a.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f562afcecd97ee21f734b851978df95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
更新时间:2022-01-26 19:39:26
|
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解答题-问答题
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解题方法
【推荐1】已知角
的顶点在坐标原点
,始边与
轴非负半轴重合,其终边经过点
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bcc60fb607ffb8d8906a45af6700f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f301ebc700ef54766c031c2cd34ea7d5.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab70c3177e0b019df0dcc64e4713f32.png)
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【推荐2】在平面直角坐标系
中,O是坐标原点,角
的终边
与单位圆的交点坐标为
,射线
绕点O按逆时针方向旋转![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
弧度 后交单位圆于点B,点B的纵坐标y关于
的函数为
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/4bb8c1c7-2dbb-45ad-bb66-98e60551575e.png?resizew=140)
(1)求函数
的解析式.并求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92307bbcaf8d84ec55a8714a15c2e60b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f0ef6501db2e606ab5150ecef0f539.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/4bb8c1c7-2dbb-45ad-bb66-98e60551575e.png?resizew=140)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f0ef6501db2e606ab5150ecef0f539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44873863c83b643fc1c97335b5478a0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ed938fbcc016782956447e7a92620d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1b02c94bf1c8407ff81a6598e02d5c.png)
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【推荐1】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f6dca0278b03d03985df5509cfaef2.png)
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f6dca0278b03d03985df5509cfaef2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c550b9586b4d6aac95f8275946f3893.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c690a41ccc5a79512036413d3e959f85.png)
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名校
解题方法
【推荐1】在
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,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eaba44950c31897524e7530dee2922e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eaba44950c31897524e7530dee2922e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d61a9169d680a624f78c2f0d96bf75d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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【推荐2】如图,在平面四边形ABCD中,已知BC=2,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/c5800b81-3f7c-43a2-a0a8-90d1ee141763.png?resizew=164)
(1)若
,求BD的长;
(2)若
,且AB=4,求AC的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025a8560773ce87a476eff221c54b1cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/c5800b81-3f7c-43a2-a0a8-90d1ee141763.png?resizew=164)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc7f54acef4e40aad465ffe5f8b4b22.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55701af967e3228bf39aa7380cd7df18.png)
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【推荐3】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3766d70707c3901cd01d6baf0df906d9.png)
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解题方法
【推荐2】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0288222efd43c8cc6e3589e237c2ab81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb1a2010b982e8d1678509a2351bd48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc27941de88fab78e07ac52d22d41966.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7307db5796e6065fd1d4edd6a75268c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38f3e2012730251385a9794404a9087.png)
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