解题方法
1 . 已知
,
是第二象限角,求:
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be7bb22972607eb798c488c459d03d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735278dcf48d2196992e888c32fb3674.png)
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解题方法
2 . 已知函数
,(
且
)的图象上关于y轴对称的点至少有3对,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28305920819606f9a5fad7f655820eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
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3 . 若角
的终边上有一点
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaef66a0582e95fb5c57a405acdea9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24d605ad707ad0e76059d8a31f50d3.png)
A.![]() | B.0 | C.1 | D.不存在 |
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4 . 设函数
,
.
(1)求函数
的单调增区间;
(2)已知函数
的图象与直线
有交点,求相邻两个交点间的最短距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f26c44f841533bc0afdd6614107a389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
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解题方法
5 . 函数
的定义域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7d8d450cb1bf334f4ea917d257e9cb.png)
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6 . (1)若
,求x的值;
(2)计算
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b63426f4eb638f5cd6bc0b0f3a88182.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa84dec3da04fe7f6dcea3d3f5fde37.png)
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7 .
是第______ 象限角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d50042c9876aeec839c11ac56a6f85b.png)
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8 . 已知扇形
的圆心角为4,其面积是
,则该扇形的半径是______ cm.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c258d2be23084686379c3c279f54ac.png)
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解题方法
9 . 已知
,且
为第二象限角.
(1)求
,
的值;
(2)化简
,并求值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9da049c686ff81df5d6645ef51e993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27014901b91b1941a106e3f0bbca84e.png)
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解题方法
10 . 已知
,
,求下列各式值.
(1)
;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b3c3e0523d4e14c7b900e162641e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744ee15af01a8e7c0f126edb5f68132.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24d605ad707ad0e76059d8a31f50d3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab46e06bfa4bd3adabcd0f73fb1e268.png)
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