如图所示,在直角坐标系
中,角
的顶点与坐标原点
重合,始边落在
轴的正半轴上,终边与单位圆的交点为
,其中
.
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734198164643840/2782411138768896/STEM/042dfe4c-f333-4a63-8222-6bd2ad8c5c3b.png?resizew=276)
(1)求
和
,
,
的值;
(2)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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba700869f642c69bafadde89179f9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b170470d02c85c1be9a3faff5eca0de.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734198164643840/2782411138768896/STEM/042dfe4c-f333-4a63-8222-6bd2ad8c5c3b.png?resizew=276)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5004a2aa94a7a520dcb51d374b751684.png)
更新时间:2021-08-09 12:52:51
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解题方法
【推荐1】(1)已知点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0632becd411a505efaf6ce37b6aada3.png)
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(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739159a5503301c14936edaadf2fc67b.png)
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【推荐2】已知角
的始边与
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ca53b9581360c2dd1bc74cfebbfa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda4a6cff1938676625423fcbb6f5938.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da4f8a8ffe817d840527a67e9669219.png)
您最近一年使用:0次
解答题-问答题
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较易
(0.85)
名校
解题方法
【推荐1】已知角
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(1)求
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(2)求
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![](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/c687a0d52454873caccbad7b21b4a2ed.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624897965c5f133b85d6a6e9601b5d99.png)
(2)求
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【推荐2】请解答下列各题.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/762c47019faf722e0dcc9ab9d79d1979.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed18c4c4dab6dba87121a631118fc78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f63dc02238b087ff47e9aa5bf6759d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656d63d27d135e3fd2f1b7fcec32312b.png)
您最近一年使用:0次
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【推荐1】设
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(1)化简
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec97cdb8b7349121addcbd8746ef944d.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7332be88b75d06a5b7b21a7d88f3d7e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73387a4ccf38c8da46b698b2a8a98152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
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【推荐2】已知
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(1)化简
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fd913214fba8ecfc872b332eb17da4.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a6443d1a1fd0498b1751377e230e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb27b87a8f0a768c94664131a4fdfe3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7aee715ac87a76f7a00996af77481ed.png)
您最近一年使用:0次