解题方法
1 . 已知角
的终边上有一点P,
,且
,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f3ea44bfc0dfeda12b479a96a0be74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fde6e326becf4ebbceb22302c526cbb.png)
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2 . 直角三角形ABC中(其中
)A、B、C的对边边长分别记作a、b、c.则以下式子中正确的是______ .
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f149e83812e72efd7dd3dfc78d0134ae.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa21eea51de045d9b0efd2c9a350714b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9660e6231da064636e06cc372a207f38.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da12a4277595fa6e5f36e68382cea304.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cff8f90deb250b018ef339fbfb5df20.png)
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解题方法
3 . 若角
的终边经过点
,则下列各值中不存在的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079dd115a4b8cbc93918a853363786dc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知
,将角
的终边逆时针旋转
,所得的角的终边交单位圆于
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5acb85cce3c0e8690fb31a0fd8b53a5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc282dae4ac9132196ac5d13f63b901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099c0b8ff632471eafcdb239987b90c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5acb85cce3c0e8690fb31a0fd8b53a5.png)
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5 . 若
的终边在
轴上,则下列值不存在的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 若角
的终边过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d7258de3ea69c206cd1425a8caf1b6.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ec7c99202b44d5d65239f65f155b6f.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80d9215a601c5e05cbb04fec958fe73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d7258de3ea69c206cd1425a8caf1b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ec7c99202b44d5d65239f65f155b6f.png)
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7 . 在
中,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98aa2d95ef06695d19891a4b198e6233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff756f587e9d13a8abe7543d7468d8b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
您最近一年使用:0次
8 . 在
中,
,
于点
,下列比值中不等于
的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98aa2d95ef06695d19891a4b198e6233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aae1dc870a60a2070469d556deb472.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图,
为
的
边上的一点,
,
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/67401279-1acc-4511-af06-ee818311effc.png?resizew=197)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab84416b6926361f411b0a595235537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa4150707c45a0971091e4110d2a16d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/67401279-1acc-4511-af06-ee818311effc.png?resizew=197)
A.![]() | B.![]() | C.![]() | D.4 |
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10 . 下列各公式中,对任意角
恒成立的个数是________ 个.
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1ec2d7289bc848c59d03ef876073d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9728cefd536ca82f8b2f34aa0733b5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008c044f8b1b4f7df0da3a409e80c55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deeefde15ee409fa570882abccd9b475.png)
您最近一年使用:0次