已知角
的顶点为坐标原点,始边与
轴的非负半轴重合,终边上有两点
、
,且
,求
.
![](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/a1de2c0218509a1f3ededd231f68894b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2cb1413110a5b3ab7ce84965d31572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f321d3270cf0ae752c1a5f777c4e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13880b9454c5942f164d934b1834783.png)
更新时间:2023-04-06 21:48:41
|
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解答题-问答题
|
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解题方法
【推荐1】如图,在平面直角坐标系中,角
,
的始边均为
轴正半轴,终边分别与圆
交于
,
两点,若
,
,且点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/2021/1/21/2640961091354624/2642830321901568/STEM/f7d4a88e576145a9b2bcf113bcbc887b.png?resizew=189)
(1)若
,求实数
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/560e38f4ef9d0d1cea914f85ea5fb296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e36c2251ce1e37ba311a7eca47a978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a525f01f2562ea2efc3bf5edd8a8aa.png)
![](https://img.xkw.com/dksih/QBM/2021/1/21/2640961091354624/2642830321901568/STEM/f7d4a88e576145a9b2bcf113bcbc887b.png?resizew=189)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982459df0629428f2340b407eb60c13d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e2538f01d45ac37419b051b4b1f5e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
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名校
【推荐2】已知角
的终边经过点
,且
.
(Ⅰ)求
;
(Ⅱ)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e52f76933977f6c92b5862f97b7e41e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a6c7a060a2818e01d31e04ccb89a4a.png)
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较易
(0.85)
【推荐1】已知函数
.
(1)求函数
的单调递增区间;
(2)将函数
的图象上每一点的横坐标伸长原来的两倍,纵坐标保持不变,得到函数
的图象,若方程
在
上有两个不相等的实数解
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba111b6ec6be6724ce0792f2e7b2c80.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f13503418e9e01c20203b6ae8db0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27794407a3d82a6746f7e0871051f486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
【推荐2】已知向量
,
,其中
,又函数
的图象任意两相邻对称轴间距为
.
(1)求
的值;
(2)设
是第一象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8224e1202f10080b32252de85ab787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e1bdc9b1e3c970aed21aa100ddf9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc732f16356a4119f36fd35da0e4588c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726f76e2fa62183fcce7dee73bfc98ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4316bb6d433521ac79314c17752c7d13.png)
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