计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a50b85089c269070a42ccfa0b92652.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a50b85089c269070a42ccfa0b92652.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69271ef0d2530407b60ad7f4f972b250.png)
更新时间:2018-11-16 00:04:34
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相似题推荐
解答题-问答题
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适中
(0.65)
名校
【推荐2】(1)计算
;
(2)若关于
的二次方程
在区间
内有两个根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e0c46009496d86e3952147a92191bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828bb146f1997059f51309b2d2aa99b2.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf19eadf3ef5c2e4e9d9448cb88afbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722130469f5aded0179c8e96fbb27007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知角
是第二象限角,其终边与以原点为圆心的单位圆交于点
.
(1)写出三角函数
,
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d4fe87c3f4e3b1e809448a6d5131cb.png)
(1)写出三角函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c806a0977065b6016136c2c3916fdc.png)
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解答题-计算题
|
适中
(0.65)
名校
【推荐2】
.
(1)化简
;
(2)已知
是第三象限角,若
,求
的值;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434b2f19e2e8b8f5b64d3a0202446186.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9aabcc24a7bf13c256ca2bd8f11a6f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da057debb0441ab76ea3b829571f1ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9aabcc24a7bf13c256ca2bd8f11a6f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6521a04a1d4fc16d326ad7270cf4e636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9aabcc24a7bf13c256ca2bd8f11a6f.png)
您最近一年使用:0次