21-22高一·全国·课后作业
解题方法
1 . 化简下列各式:
(1)
;
(2)
(其中
是第二象限角).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7269c918d249fd0d6d6fda992c40b0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd00489966c759563d2c770411275e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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21-22高一·全国·课前预习
解题方法
2 . 求下列各式的值:
(1)cos
+tan
;
(2)sin 810°+tan 1 125°+cos 420°.
(1)cos
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce906b75f9e75787215ce946a7f0a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbc61fe9fdfa89dfd4cc7250e4a778.png)
(2)sin 810°+tan 1 125°+cos 420°.
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3 . 不通过求值,比较下列各组数的大小:
(1)
与
;
(2)
与
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a06a529fcf5ff6b98eb046d9a1a164a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e7f7b7400a0fe23684730d25e8b67a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093fc7b1084dbca841506623d64cf5f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b34f190f9d45386ca46ec9042332160.png)
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解题方法
4 . 已知
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9db7faaaa412504bc54819d9de6d150.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889c4169971bb43d2b7027b78d20c77a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea1468ed7529f0451bb5fba41ab5320.png)
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5 . 已知
.
(1)化简
;
(2)若
为第四象限角且
,求
的值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f713032eddbff1318e5892673a57c2b.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/53a180243ce967fdbec9d35a2359ab9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
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2021-12-21更新
|
1760次组卷
|
3卷引用:北京市第二十二中学2022届高三10月月考数学试题
北京市第二十二中学2022届高三10月月考数学试题新疆昌吉州2021-2022学年高一上学期期末考试数学试题(已下线)专题18 三角函数化简问题(期末大题7)-题型秒杀技巧及专项练习(人教A版2019必修第一册)
21-22高一·全国·课后作业
6 . 已知
,计算:
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68873c0952a163737bc509616b595834.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42d9d5d3a7a4ca2d9943646ad677fa3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51080a7a90cf4964c15e6316fbe658f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2084987ed28354977a2f4222f6a8f1.png)
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7 . 求值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8eea4265c44c01bd4febb57b30da477.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bc38e060ac389afca970b11a5b276c.png)
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解题方法
8 . 已知
是第三象限的角,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed98a4b719e9c3ff014fb6a411c950b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b9dcd59a3f917739228a4f6027208a.png)
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解题方法
9 . 已知
,且
为第二象限的角,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d5025cbac60883f60251c52d584fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa54316976008fc5f107b89d6490ae3d.png)
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解题方法
10 . 利用诱导公式,求下列各三角比:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146de6d209d3e498f598b530e0e156b4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66753ee6456cca0e44c8ad8b968f6ac1.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e014b5631eeca4db0df882d9b0d0430.png)
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