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1 . 如图,在平面坐标系
中,第二象限角
的终边与单位圆交于点A,且点A的纵坐标为
.
(1)求
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/eac97e6740365c85ad857aff85cefbe5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/307bab62-b3f3-4c28-8423-e36bd2729e3e.png?resizew=160)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6369cd1db768436809404b1f3c4132c0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b6164fd7bf37142154fc54bedb4dac.png)
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2 . 求下列各值.
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662a9660a659d247c7632024ebb7bbc4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce7552fc0527cee1d98b774ed0f2509.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8469b4933ff6bd25b32c1f5a79770182.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f951f9f94e4bc41dc11e71b1635d0418.png)
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3 . 已知
为锐角,且
.
(1)求
的值;
(2)求函数
的定义域和单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de6aaf72748b78b64876a0b18363a09.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c06a7e2f04ac5bf68cd3d441e491560.png)
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4 . 如图,在平面直角坐标系xOy中,点A为单位圆与x轴正半轴的交点,点P为单位圆上的一点,且
,点P沿单位圆按逆时针方向旋转角
后到达点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/d4db28f0-ebe7-4899-90a8-29cc96565129.png?resizew=180)
(1)求阴影部分的面积;
(2)当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94048a49b1f6a3858c2b301ae7d856fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf9304d22a3491440034660f115492a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/d4db28f0-ebe7-4899-90a8-29cc96565129.png?resizew=180)
(1)求阴影部分的面积;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1f08c7640e62e8717abf4d44a6c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
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5 . 如图,点A,B是单位圆上分别在第一、二象限的两点,点C是圆与
轴正半轴的交点,△AOB是正三角形,若点A的坐标为(
,
),记∠COA=α.
![](https://img.xkw.com/dksih/QBM/2016/11/26/1573187448020992/1573187453689856/STEM/c7a490fa08e04667adf01671696a76a9.png)
(Ⅰ)求
的值;
(Ⅱ)求cos∠COB的值
![](https://img.xkw.com/dksih/QBM/2016/11/26/1573187448020992/1573187453689856/STEM/a3b2834f8af8423da0cfd7e00565ab9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://img.xkw.com/dksih/QBM/2016/11/26/1573187448020992/1573187453689856/STEM/c7a490fa08e04667adf01671696a76a9.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df0bfcbd732afa9b0add1d2b03a7a4d.png)
(Ⅱ)求cos∠COB的值
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2016-12-05更新
|
732次组卷
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6卷引用:2017届海南省海南中学高三上月考三数学(文)试卷