组卷网>知识点选题>转化法求平面向量的模
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1 . 已知单位向量eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d满足eqIda264fd9d302f4c9fbe6ff4dec09c37e1,则eqId73787a37adfc4f5f8a0317783595ba64______
2 . 已知平面向量eqId02936c0215af4b77be0353ddc4474d4ceqId4acf79be34c744e59e87840486693e54满足,eqIdb777c6f46ee744a4bbecf8e478b570f7eqId351b30d5c6f24d15b9db9762a02f937d,若eqId97cbfb197e624a1a85256c544420ed7f,则eqIdd792cebbc78a4ef6a5a5222c971aa5d2的最大值为(   )
A.1B.eqId317ed84d205b4156847380f7e9f38b08C.eqIda2a0ce3781fa4c26b624f5966b7dee44D.2
3 . 已知向量eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d满足eqIdc6363ccacff44562a38bf4e5d83d26ffeqId58bf8eee966243fd925a8d89db0da593eqIdb5b84322186c4a78ab1602df30cd472e.
(1)求eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d的夹角eqId6c9518e43fd5459798a30cfc10026e3c
(2)求eqIda3d6c97f59194898a235c530af3c7c4a的值.
填空题 | 容易(0.94) | 2021·湖北孝感市·高一期末
4 . 已知向量eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d满足eqIda616f9e4d1164dd79a1077602f0b9eaa,且向量eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d的夹角为eqIdf1c3337151994ec4b99354c9d54f311c,则eqIdf984956b4ecb487f87dfb04d9ade1ebf__________.
填空题 | 容易(0.94) | 2021·全国高二课时练习
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5 . 设eqId3354fe4e9ad04d1ea1780fcce00b9577eqIde3b24bff33824ee89fce87fb4ac41e32eqIdcfdc20e2336245b6a4c5cf9d4e333f48,且eqId90a6713240294a85a7d2843a62f9e415eqIde21a0ec9d0b847e998f083ebeb5d5d96eqIdd9c808a92ce44b819649aea85da20012,求向量eqIdcfc4a48073e144b0ba74c75a419db947的模为___________.
更新:2021/08/02组卷:0
填空题 | 较易(0.85) | 2021·北京西城区·高一期末
6 . 已知向量eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d满足eqId25b6dc8f374f42c1af343f107ad3f45aeqId54a067a5eb714f70a11457ed3bdabc45eqIdfd4010164dc845b8a692f8ae6476d88a,那么eqId9224a263543c474ea41fa3850bd24023___________.
双空题 | 一般(0.65) | 2021·浙江绍兴市·高二期末
7 . 已知平面向量eqIdc1d5ac9426ff487bb0a1564eef4eb849满足:eqIdca80d6a361634607b3da78347406a441eqIde7ae764a7c64416e863d54c86260ffd8eqId289370f2e9904fdc87c63bb7eee2f7eeeqId862609e467984e19bb9f466de4c518ca
eqId9224a263543c474ea41fa3850bd24023___________eqIdee2fb9b5d5e14ab48bf5d9b02c690630的取值范围是___________.
8 . 已知单位向量eqId7fa34c81fe764c5db19edc8249d4ccf5eqId9d9c58594a9b450888a060f3bbe0e37e满足eqId75b4452b6c764885b2573b440158b29c,则eqId7fa34c81fe764c5db19edc8249d4ccf5eqId9d9c58594a9b450888a060f3bbe0e37e夹角的大小为______eqId45d63f02f7bb4f429503caa36987631d______.
9 . 已知平面单位向量eqId71d6a2ff828b41caa8cf9562454f4794eqId32de792adcf94b1285482ab77748208aeqId0e0aa8bf243e453ba92ea4ed127b3e0c满足eqIdf8e35a3f97f745518ee26cb6ba1b3f0aeqId78f080032c2c4a9c9d87dfca3328a423,则下列结论可能成立的是(   )
A.eqIde8307f7435cc4463be47f4c926e20205B.eqIdd3de48b28d744183a0306e0d05848a31
C.eqIdf2a7fb28de8d47dba1da864b74da9538D.eqId0325f3f41fee46a280efad529b648364
10 . 已知eqId1e62e3ac9406439f803ca28a6690b611eqId4aaa058a4d3247c0aeb7f6a02fc031ddeqIdbf6af9988df44660a479713eec9ba9da.
(1)求向量eqId3d906e5d3e694363af29a999ce4871a6eqIdb8affe1d7571428283ab57a95ed2a84a的夹角;
(2)求eqIdee724d46c16b4828b53b0d5ce5695673.
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