名校
解题方法
1 . 已知向量
,
满足
,
,
.
(1)求
在
上的投影向量;
(2)若向量
与
垂直,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fc7a342293983cc4865498c121493d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a31604d8909d500e9047e9a3b1f5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c8afe4cf057c5b05216efe199b6780.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa53e6f54e190da611f9f18ee20076d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0f5d6389672e98b7a226d86706c390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
2 . 已知
,
,
,且
与
垂直,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02af59613596682734297aebc578801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361357baa2ad35705250c063ef6707d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a83b969f153faa6ff9ecf12f8d6737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67a5673958e175b00200a75e645c73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知两个非零的平面向量
与
,定义新运算
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca9106803b48470744f31d106dfa875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0947cecefbc8ecec287729c801e30415.png)
A.![]() |
B.对于任意与![]() ![]() ![]() |
C.对于任意的非零实数![]() ![]() |
D.若![]() ![]() ![]() |
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名校
4 . 设平面向量
,
,
均为非零向量,则下列命题错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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解题方法
5 . 已知向量
,
满足,
,
,
,
的夹角为
.
(1)
;
(2)若
,求实数
;
(3)若
与
的夹角为钝角,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194537355c89656428e712610562c234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596a3ee5d8473fc6619ea7730e13325b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5cd0526a2cf3917645c641174e00d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a126bb16b6ab8644a8e8d33f6909224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afc391105ca04c187e6be5bd77acc78.png)
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名校
6 . 在
中,
为
的中点,
为边
上的中点,
交
于
,设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc03a3ba496faee748a8d63e5d4fa92.png)
,
表示
;
(2)若
,
,
,求
的余弦值
(3)若
在
上,且
,设
,
,
,若
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc03a3ba496faee748a8d63e5d4fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd5844deaa2a8cdda9477bcbf76c459.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede13546f2d31024998fd9a81b6004eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0f8a493ac2b5d05c09e47ed4169629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99db7cd00a7debcdd17f4716ba9cd77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72689e44ff4e828835ee13ea82320fc6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5e19562bf0b7f47fa50b428d4c9f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede13546f2d31024998fd9a81b6004eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0f8a493ac2b5d05c09e47ed4169629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5685770f82fd0a654c6098caa53e6949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5610dc0acc42d3c5e5c60847842f7254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc53d9b451ff0fac9e1eb843eadfe33.png)
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2024高一·全国·专题练习
名校
解题方法
7 . 若
是
所在平面内的一点,且满足
,则
的形状为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6aa00853330ee967b89073a4f21687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等边三角形 | B.等腰三角形 | C.等腰直角三角形 | D.直角三角形 |
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名校
8 . 已知在
中,
是边
的中点,且
,设
与
交于点
,记
.
表示向量
;
(2)若
,且
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ee071eeac50f0aad26a5139fdf2a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7753d15caaa20b787e9d8923eba7bbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b2f1f3c3a1e6f78e384193b1d07962.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d48cf5b1ac67763f9a763ad215019a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f288f8a6a042f8796f7ca620ecde791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8e6a59ae1aa48966ba5ea0e205f7b6.png)
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名校
解题方法
9 . 已知单位向量
、
满足
,
.向量
,
,其中
.
(1)若
,用反正切值表示角
;
(2)设
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9e93985aa52600846dfaacc13bdee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122a0f011ecd371d8a8f902fef2d435d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dea70567b6a8921c9694671b06986b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e24fa3acce6e9862379625e11065258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e7ec01395f30fafe44a0f0791aef76.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a53cdfd02f840f55c72dbb4d0607c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5d383cb1130244f0e4985fdc2ec719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb5138a03b19266f82223899a614f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b8b77522dfc890b99f0a86a690de94.png)
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10 . 已知
,
,且
与
的夹角为
.
(1)求
在
上的投影向量;
(2)若
,求实数
的值;
(3)求向量
与向量
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6316d995f00623f05fc3d56a6cbe5f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407538138dd68ab917925c2063cc98e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73dd35ee4bffd2ec31d3cb421ab69da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
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