如图,在平面直角坐标系
中,
为单位圆上一点,射线
绕点
按逆时针方向旋转
后交单位圆于点
,点
的横坐标为
.
![](https://img.xkw.com/dksih/QBM/2022/1/23/2900512374505472/2909020350693376/STEM/64b0c1a8-02f4-463a-912b-7ffed67fa47f.png?resizew=190)
(1)求
的表达式,并求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0c32c6e6d5e557dc2293785a4903a3.png)
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d739fee59c1cb6ccc3ab337a7759b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd288d4152caf5fc8187a1a901c8949f.png)
![](https://img.xkw.com/dksih/QBM/2022/1/23/2900512374505472/2909020350693376/STEM/64b0c1a8-02f4-463a-912b-7ffed67fa47f.png?resizew=190)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd288d4152caf5fc8187a1a901c8949f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0c32c6e6d5e557dc2293785a4903a3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5a80b2d936bc5e2ccc6f41a70edc1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db4d179e9428e47b1b4a65c504a2388.png)
更新时间:2022-02-04 09:59:57
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【推荐1】设A是单位圆O和x轴正半轴的交点,
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(1)若
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(2)设函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/b3227108-fa80-4948-9126-fa0a7df4ee9e.png?resizew=122)
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解答题-问答题
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适中
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【推荐2】已知函数
.
(1)若点
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e9cd2cc1814d9d28b400be1b4f99cd.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22f7647e99a73e74e018a4a6e7cf77a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51851dde11850caa269fa42e9e8a987a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bae0205e80ff2f6a8d2fe7a78d507ff.png)
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【推荐1】已知角
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(1)求
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(2)若锐角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894216df25c68ca1950a94aab7d4a75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
您最近一年使用:0次
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适中
(0.65)
名校
解题方法
【推荐2】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e583f11ca7ca153ad0c6452d1d9ad44e.png)
(1)求
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(2)求
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e58361e613f5091947beb518a62aa3.png)
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(1)求
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab6ea2cc4f11ac393814de4af68b969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知
,且
,
.
(1)求
;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f8b19cac0777b84bbc9328f11fb57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be5d2ab18523d7c39e6f164daad439e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd0ec23e454440796739087fde0a373.png)
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2894710ad17e08f1b98760e66bf02c5.png)
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