名校
1 . 化简求值
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d5cfea3a0b5904c2df979285591ac6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d122c476738747753e4c363fb99d1338.png)
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2020-11-30更新
|
911次组卷
|
5卷引用:湖南师范大学附属中学2020-2021学年高一上学期期中数学试题
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解题方法
2 . 如图,在平面坐标系
中,第二象限角
的终边与单位圆交于点
,且点
的纵坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/0cec23df-f7f5-44ab-8f44-f7810410fb46.png?resizew=154)
(1)求
,
,
的值;
(2)先化简再求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/0cec23df-f7f5-44ab-8f44-f7810410fb46.png?resizew=154)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)先化简再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2d28bfcd18f4d4d871440fc31e7e34.png)
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2020-06-10更新
|
551次组卷
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8卷引用:湖南省株洲市2019-2020学年高一下学期调研数学试题
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3 . (1)计算
;
(2)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c1fad2a00571ba5c71be0c0f1e39e5.png)
(2)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33004a2d6e3ff8941b7f8acb219a696e.png)
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4 . 已知
.
(1)化简
;
(2)如果
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f043bf33e3cf1d55074b69a7d74fae.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b42af3dbfb279996b472032e114d1ca.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6bd28653f75dd3e0b9d1887f9b3f57c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1958d0a5ee54327bfcb564cb07aa2845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41735e7d657d5e1ab037aed20691f495.png)
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5 . 求值: (1)
;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8302f5a42473e3b1d43cc0886751161a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f7efdf7a1ddd20c55055d941b73d28.png)
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6 . 化简.(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f159465486faa29266f3706bb90aa0.png)
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f159465486faa29266f3706bb90aa0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1197af91ab9b4933d33303bccb57d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ad943df3f041566c76f1a3b1513852.png)
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2019-12-08更新
|
443次组卷
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2卷引用:湖南省衡阳市衡阳县第四中学2019-2020学年高一(平行班)上学期期中C卷数学试题
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7 . (1)化简
;
(2)求值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b450745d77ac89dc5646eac00f28b51.png)
(2)求值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947218b2725e4ed1289951e0a545a37b.png)
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2019-11-19更新
|
518次组卷
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7卷引用:湖南省衡阳市第八中学2019-2020学年高一上学期期中数学试题
8 . (1)若
,求
的值;
(2)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be5cfbeb4cf84ff6f3ae242ee40ab56.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489a2f08640a2a3b4e220ed7e3e5c75f.png)
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解题方法
9 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaefb12487868d56bbdb1a0820bb388.png)
(1)化简
;
(2)若
为第四象限角,且
求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaefb12487868d56bbdb1a0820bb388.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/898480122868329af2f47ffed181241b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
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2017-04-08更新
|
1022次组卷
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8卷引用:【市级联考】湖南省娄底市2018-2019学年高一下学期期中考试数学试题
10 . 已知![](https://img.xkw.com/dksih/QBM/2016/8/4/1572956059320320/1572956065406976/STEM/7d74168198ac410cbba3ba3b3a1f859c.png)
(1)化简
.
(2)若
是第三象限角, 且
,求
的值.
![](https://img.xkw.com/dksih/QBM/2016/8/4/1572956059320320/1572956065406976/STEM/7d74168198ac410cbba3ba3b3a1f859c.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa62ede81ff7d43759148a1a8c212607.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://img.xkw.com/dksih/QBM/2016/8/4/1572956059320320/1572956065406976/STEM/8899f13d115142fc9946458bd04dca59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa62ede81ff7d43759148a1a8c212607.png)
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