组卷网>知识点选题>坐标公式法解决平面向量共线问题
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1 . 已知向量eqIdb95d440f4558489b97537cbf9386d253eqIdf69df5caff1f46ce90f3b256e4aac6ab,且eqId978e59a9f8504a15b54b6796f3a932bd,则m的值为(   )
A.eqId8e3ab4836a874ab593bb67a2bce00575B.eqId5f51ce9cc7fe4412baeb871cceb26665C.eqIdca7f979b4aed44608faf40debecd18b1D.eqId4c0fea3781d84454a9f933aab6fe70bc
2 . 已知向量eqIdab4490ec6b7e4731baafa4768bafa2adeqId11679df77fc84f1e90df040aafad7982
(1)若eqId0190ccabb04442199a0237efc0ffb79aeqIdb29feab91d7f423595c4d930c3ba584c平行,求实数eqId4d2187284c5d4de29906363f7d21f60f的值;
(2)若eqId14cb2b2822de4f42abd8745987799247eqId23ea9309b0174ad7bcbda4cc87de16e0垂直,求实数eqId5f420ef2d0b94c4b8a5d8e20a5d1ce2c的值.
5 . 已知向量eqIdbde0551cc37741ae9fe73a39f3d88952,若向量eqIded0d45e90d0d49228b1945520075f00ceqIdfe7c59e48c814375bb5f75c14dc187a1共线,则eqIdca14cbd54fd543c58de2927ff23ec535(   )
A.1B.eqIdbeffaaf8d5cd43cf8375210d69fce6beC.2D.eqId5c1c12d4b3ba4aaab6267324ae66c81e
单选题 | 容易(0.94) | 2021·重庆高一期末
6 . 已知向量eqId8981a376a1c443b0929116f827e696eeeqId143f05dcb4ce48d2baac64552b2a95a8eqId2fabaf2ac696438aa5e0cf6be50c00d2,则实数eqIdd33c7c1015944e2b81de4ff8695de842(   )
A.eqId8d0a28cfeffc45b899be186d5202049dB.eqId5c1c12d4b3ba4aaab6267324ae66c81eC.2D.4
7 . 已知向量eqIdfc64f97976554904bb4d6ffbeacc3191eqIdfc0433d02a1a4cd0b0c6c59a140c2467.若eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d同向,则eqIdd33c7c1015944e2b81de4ff8695de842(   )
A.eqIdfcc58431683b452ca65d1d9977a280bdB.1C.eqIdbeffaaf8d5cd43cf8375210d69fce6beD.eqId49b7b111d23b44a9990c2312dc3b7ed9
8 . 已知向量eqId79001f7d5a4f470aa4ad507a2e671fceeqId85708451ade44662b58d1206877c0997
(1)若eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d的夹角为锐角,求实数eqId5f420ef2d0b94c4b8a5d8e20a5d1ce2c的取值范围;
(2)已知eqId31b4305bc296434d8a6a790956c933cceqId644d8c2bb33c414f8155bf0cabf7a855,其中eqId052844cae8574a8ab842c38a039baac0eqId8754ce8cf7f34f04abb9a0c041f57f5ceqId19a4eb16029e4550a14f2afe4741a3c3是坐标平面内不同的三点,且eqId052844cae8574a8ab842c38a039baac0eqId8754ce8cf7f34f04abb9a0c041f57f5ceqId19a4eb16029e4550a14f2afe4741a3c3三点共线,当eqIdafd891b2b3904a9aa9174ce4c71fabbd时,求eqIda4be99d332154d13a4a6ed1ff6444fe7的值.
10 . 已知eqId64b9b599fdb6481e9f8d9a94c102300b的内角eqId10bbe48f886a4fa78fdf8c1fd064f9b4所对的边分别为eqId0ce93bfa1f6a4a23b3258410dd19847a,向量eqIdf8ef473dc445484d9bb053450a218365eqId7dac4876596a45b4b2638e80c398fcc5平行.
(1)求eqId052844cae8574a8ab842c38a039baac0;
(2)若eqIdcc9fc5b6f2fa4144aff4bf207124ddbf,求eqId64b9b599fdb6481e9f8d9a94c102300b的面积.
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