1 . 化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bab0cf694023a1518ea6a1e7496374.png)
您最近一年使用:0次
解题方法
2 . 如图,在平面直角坐标系xOy中,角
的终边与单位圆交于点P,且点P的横坐标为
.
![](https://img.xkw.com/dksih/QBM/2020/12/29/2624894197268480/2629551786762240/STEM/06a7cf49ad234f3fa7d02030b1c6d6eb.png?resizew=158)
(1)求
,
的值;
(2)求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f8657de54481172ca9179c88c0c4c7.png)
![](https://img.xkw.com/dksih/QBM/2020/12/29/2624894197268480/2629551786762240/STEM/06a7cf49ad234f3fa7d02030b1c6d6eb.png?resizew=158)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67fc74c1338b2c523b1a7b42061d7cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846a1bb19d36861dbe79616e2a8fa667.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec43f7ce40c9b053662afabba655a2da.png)
您最近一年使用:0次
2021-01-05更新
|
167次组卷
|
2卷引用:重庆市三峡名校联盟2020-2021学年高一上学期联考数学试题
3 . 求值:(1)sin180°+cos90°+tan0°.
(2)cos
+tan
.
(2)cos
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce906b75f9e75787215ce946a7f0a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbc61fe9fdfa89dfd4cc7250e4a778.png)
您最近一年使用:0次
4 . 课本上是利用什么来比较精确的画出正弦函数的图象的?其基本步骤是什么?
您最近一年使用:0次
解题方法
5 . 化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254cb9e0a4ecdc01da7c5db5dfc02e74.png)
您最近一年使用:0次
6 . 已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644cd4b883c3676048673d29b0e74c1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
您最近一年使用:0次
解题方法
7 . 根据下列条件,求角x.
(1)已知
;
(2)已知
,x是第三象限角;
(3)已知
,x是三角形的内角.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84df107e2cd08833bbc5b693cf6bbf2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0f67b9b8641598fcdbff0709ed1c61.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2565f03d5379867733f57ef51d9c2d.png)
您最近一年使用:0次
8 . 判断下列每组中两个三角函数值的大小.
(1)
与
;
(2)
与
;
(3)
与
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78066547665546d74c6668522781c3b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2a527fe41681033f35865835f89dbd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9c69c35754bffaf138f99d578dcd20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87001f4bf0b80f8363fc4492fb49b30.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdc8bec5147d26c2782e04332e0ab64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c0ee2aa8a77f2dbbcd39601a9757b5.png)
您最近一年使用:0次
9 . 求下列各三角函数的值:
(1)
;(2)
;(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbbd3ea9710d59b2959a125e8e697e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1452926d7e466559e484c5fee4472c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad79a0137b43c0a4a36fdad373f768ef.png)
您最近一年使用:0次
10 . 求下列三角函数值(可用计算工具,第(1)题精确到0.0001):
(1)
;(2)
;(3)
;(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24cb473e4f00d273c1941e5c421d7b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e88a786a9a41d5be6ed24b4dc9697c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375d2d5e6c9ac1430eb60df20438aefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aba4530f4f8a59de1d61969e2ad9a4.png)
您最近一年使用:0次
2020-02-07更新
|
766次组卷
|
4卷引用:人教A版(2019) 必修第一册 逆袭之路 第五章 5.2 三角函数的概念 5.2.1 三角函数的概念