解题方法
1 . 已知向量
,
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aee9f51075ff8ba1f24632c68e4b4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b0093428ca3d3e314b89e108ca7cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d0e32451e0ec6e6aadaa63555ee8a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
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解题方法
2 . (1)已知
,
是第四象限角,
,
是第二象限角,求
的值.
(2)已知
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb40cd5425e9d4fcea334668467726a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0461d1e26cbf9b3bf31cc94173ccfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96d0ebead4e985674d948ebc9308f8c.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc337b89f5321073b332cb93e54772a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117f3e9736ba137c1083aca25f98dca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
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3 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aea702883e9cd79594a64f0cfc2fbd6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 若复数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb1edb878ce2987e6a6027e5233bb9e.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbcb5bc5601877cc286185236378fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb1edb878ce2987e6a6027e5233bb9e.png)
您最近一年使用:0次
解题方法
5 . 记
的内角A,B,C的对边分别为a,b,c,已知
.
(1)求B;
(2)若△ABC的周长为
,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fba9a94dbc043ae1fa16e30ad817b16.png)
(1)求B;
(2)若△ABC的周长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2c06207565e9fa6a288a788e4ab2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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6 . 在△ABC中,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2227f3d6e63c51cd3defc4c7e86eff6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e3fc39d2b508cc1cae769a5e7266c0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知在
中,角
的对边分别为
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516983449108347c9bbf5dd2a72ab3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90d7f054e8f0346479e1999622f11cf.png)
A.若![]() ![]() |
B.![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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8 . 设函数
,且函数
的图象的相邻两条对称轴之间的距离为
.
,求
的取值范围;
(2)把函数
图像上所有点的横坐标变为原来的
倍(纵坐标不变),再将所得图像向左平移
个单位长度,得到函数
的图像,讨论函数
的单调性;
(3)如图,在△ABC中,记
,已知
,△ABC外接圆面积为
,
,
的内角平分线与外角平分线分别交直线BC于D,E两点,求DE的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d642c7af6a039faf7ec091e6f4d6fb6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778662c16848db470c6537705b8a839c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(3)如图,在△ABC中,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2cf0e95fdf1fd8a5b01d3dfd905e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8826cc2b9db6d76f7b9d5bb4e8832ee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9609625b502348556ff8ba32deac8caa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150f156ef2d857e1dceaffcd7a354e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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9 . 在△ABC中,已知
,
,
,
,点N是AC的中点,AM,BN相交于点P.
(2)求
;
(3)求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ecb91d19a693299dcdad4059b6237a1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d09bbbd3ccd8c2314b11989eb4dbf11.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
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名校
解题方法
10 . 已知向量
,
是平面上两个不共线的单位向量,且
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2868a9fe011f56a80c9d1a8ee4604d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fe4e713c108e118522a99ecd683924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd11dca5142d2fbf1c9132605caf3cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6f11d632680310af04b2ea8f1e90fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ce5d058c7a9665dc8ee3961cd5e303.png)
A.![]() ![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
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10卷引用:湖北省仙桃市田家炳实验高级中学2023-2024学年高一下学期4月期中考试数学试题
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