解题方法
1 . 已知
,且
为第三象限角.
(1)求
,
的值;
(2)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f331c3d96c5812a620e326373747eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397542bab422ddbfa490381cd2c00ca5.png)
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解题方法
2 . 求值:
(1)
;
(2)已知
,且
,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7becf907834ac6ff6514e964533529.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82faa488e387138717ae484368a4c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfeaf26f178031f78a5545233a2a73f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328f4d3a80a80e08c3fd6544eadcb98f.png)
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3 . 化简或求值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5307059bb3a20f9b8611f99d1eb470d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0707166bfff1705f04bceeae24e76d7d.png)
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名校
4 . (1)化简:
.
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3386b0446016b7b83e6f7f0634b018fb.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53317c0a3a62f5a40c51c2b1e49d5b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77d874b2e9166f3d1ac3bade561d41e.png)
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2019-10-11更新
|
920次组卷
|
2卷引用:新疆生产建设兵团第七师高级中学2019-2020学年高一上学期第二次月考数学试题
名校
5 . 已知
.
(1)化简
;
(2)若
是第四象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df76f153f59cb64d403d0dbf16dc74d6.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ae77d9db9590503a76412be5abed70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
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2019-10-10更新
|
1726次组卷
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6卷引用:新疆乌鲁木齐市第四中学2019-2020学年高一上学期期末数学试题
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6 . 已知
(1)化简
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d73653acd9d790c61875f9e6a4717d0.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4443d42de2db7505b7a901e51ac74d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda5bb0c3132d694493cd117b320236d.png)
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2019-09-19更新
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1174次组卷
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3卷引用:新疆阿克苏地区阿克苏市2019-2020学年高一上学期第一次月考数学试题
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7 . 化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/461523019692bf2da64f7142fb2c89df.png)
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8 . 化简与求值.
(1)
的值
(2)已知
,求
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4b0b4712d9e7ea7aa2a4003cf1679f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff8e8f399db20c51e878b2b4b134793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
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9 . 已知
是第二象限角,
.
(1)化简
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c096bb201069efae140db6ae5c4b4d18.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ca5c118cc71f5b68a6e4f183154324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
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10 . 已知f(α)=
,其中α≠
kπ(k∈Z).
(1)化简f(α);
(2)若f(
+β)=-
,β是第四象限的角,求sin(2β+
)的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93782e10d5bbe8f373a9ba616acd1584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)化简f(α);
(2)若f(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
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2019-05-18更新
|
1205次组卷
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4卷引用:【市级联考】河南省洛阳市2018-2019学年高一下学期期中考试数学试题