已知角α的顶点与坐标原点O重合,始边与x轴的非负半轴重合,它的终边过点
.
(1)求
;
(2)若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b3baf3b2d4b483a0dbd977b913fa35.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ae955c9387d83dea2a7f092208f84e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f562afcecd97ee21f734b851978df95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
22-23高一上·云南大理·期末 查看更多[5]
更新时间:2023-02-19 18:58:12
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【推荐1】(1)若角
的终边上有一点
,求值:
;
(2)计算
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8be371470d76fad8416375feb3496d.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2292794b48968c4dbf4c765cc37fb7f.png)
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【推荐2】如图,在平面直角坐标系xOy中,点P是单位圆上的动点,过点P作x轴的垂线与射线y=
x(x≥0)交于点Q,与x轴交于点M.记∠MOP=α,且α∈(﹣
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(Ⅰ)若sinα=,求cos∠POQ;
(Ⅱ)求△OPQ面积的最大值.
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【推荐1】已知:
.
(1)化简
;
(2)若
是第二象限角,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d219707dc3b017de95d27e32e5c1f228.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6368bf38adbb637ed4ca223d8ef23ad.png)
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【推荐2】在锐角三角形
中,角
,
,
的对边分别为
,
,
,若
,
,且
.
(1)求
的值;
(2)若点
,
分别在边
和
上,且
与
的面积之比为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23725094c363fd158166a8698971694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16067eb930403706f1f21458bb0e1604.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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【推荐1】如图,“雪糕筒”为校园中常见的交通标识,其可以近似的看成一个圆锥,如图,放置在水平地面上的某型号“雪糕筒”底面直径
,母线
,该“雪糕筒”绕点
被放倒后
、
、
在同一条直线上.
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758633875988480/2780140241960960/STEM/3db11f1610ef4774949ade15d3e986ba.png?resizew=313)
(1)求“雪糕筒”被放倒后最高点离水平地面的距离;
(2)求直线
与圆面
所成的角的余弦值;
(3)若放倒后的“雪糕筒”绕点
沿水平地面旋转一周,请说明旋转一周形成的曲面所围成的旋转体的特征(不用说明理由).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4630b9ca3d20635161fa8fbf812b9128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb0339214a34e37914d5f383f214413b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758633875988480/2780140241960960/STEM/3db11f1610ef4774949ade15d3e986ba.png?resizew=313)
(1)求“雪糕筒”被放倒后最高点离水平地面的距离;
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
(3)若放倒后的“雪糕筒”绕点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
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【推荐2】已知ω>0,
(2cos
,sinωx+m),
(cos
,
),设函数f(x)
•
(x∈R)且f(x)的周期为π.
(1)求f(x)的单调递增区间;
(2)当x∈[0,
]时,若f(x)的最大值与最小值之和为6,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f6486933fe3c2459cb13943244a088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2f46955dc4a70d7fc37918699b1c34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a61b7005fda09413fcfea33c3e7b797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2f46955dc4a70d7fc37918699b1c34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe91d9cec429c2b819a79b8c1f77140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(1)求f(x)的单调递增区间;
(2)当x∈[0,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
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【推荐1】已知
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3df5e686fb5a1fd2b11f832a99d9d4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a761c85cac65727ec53aa8f65b9dfd.png)
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【推荐2】已知
,
,α,β均为锐角.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f8783429be686df75afcd56e847dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ef1b8e3a3afa1d3024280d12e73d66.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
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