1 . 角度与弧度制的换算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5106c18ff93855989da9400a2b76ed3.png)
_____ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c3b6143b54eaf6be9f40aa5159aeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d9c2b0e533e8528be255d58507e4e9.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5106c18ff93855989da9400a2b76ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c3b6143b54eaf6be9f40aa5159aeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d9c2b0e533e8528be255d58507e4e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a978d42e7546ccb688b556c7bc4a7f13.png)
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2 . 将
弧度化成角度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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21-22高一·全国·课后作业
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3 .
对应的角度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b199d124fb9a5bc8438c9884f04534.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 若扇形的圆心角为216°,弧长为30π,求扇形的半径及面积.
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5 . (1)把
改写成
的形式,其中
;
(2)
,且
与(1)中
的终边相同,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec6f18bc53e7211f54c8d5c3c43532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8387a1ed12bd1415629d38ed7f56ed49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24002c9994faa405d628dd6d445ad812.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece2bc06d38fa2cd7ac142ad0534c2d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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