首页>高中数学综合库>平面向量>平面向量的数量积>平面向量数量积的运算>已知数量积求模
题型:单选题 难度:0.94 引用次数:55 更新时间:2020/2/15 20:13:06 题号:9566016
eqId9d53b773746e4fee85db78db94795ecf均为单位向量,则“eqId1da0f28d13de4404b1255259409bc7adeqIdc91f7835c4144e81ab23732f3d013fc7的夹角为eqId022e530e1dd6453ab54467745e9df0a8”是“eqIdf5800450bd0a4d60a8e199c33a4af766”的(    )
A.充分不必要条件B.必要不充分条件C.充分必要条件D.既不充分也不必要条件

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单选题 | 容易(0.94) |
【推荐1】设向量eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d满足eqId288cd6f73c584a83968ae1bd638cc3f2eqId945ff15e37d84255b3210d684f40d193,则eqIde3cc4d0e4b6c469cb27f26eaa5d85ee0(   )
A.14B.eqId0185fdf027aa4107aa070dd486715924C.12D.eqId7bcd573cee334383ad72cc4b179fcfb3
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单选题 | 容易(0.94) |
【推荐2】已知向量eqIda6449effc5e046b9ba3bfb8d649fef2aeqId26d0383ebc3f44c2984e80b88390a5f5满足eqIdc118152c30ad4294a512a9b3c73fed0deqIdb552f2d9e30f4f709b123d0f88a8b249,且eqIdbf80e33f8af0497793eeb1eb2a0e416eeqId26d0383ebc3f44c2984e80b88390a5f5的夹角为eqIdb9383ae687874bf9a7a4a81aefe24376,则eqIdda79fe09cfec4880a16e18f7a56848a3(    )
A.eqId15d2088f003c4aad9745c07a7616191bB.eqIda2a0ce3781fa4c26b624f5966b7dee44C.eqIdcd9b24a6a6e5426ab775be20461174e3D.eqId2644c4fd7d684e75ae5ed93cb3581244
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单选题 | 容易(0.94) |
【推荐3】如图eqId5a607e385f014071802e5e9ae3b3b386为互相垂直的两个单位向量,则eqIdcb7a57ed933043328944457ab58957bd()
figure
A.20B.eqId5e30b3f3682042e3bf61665ea4945f08C.eqId5d04f8a500ff47769300856360b7f29aD.eqIdb343117ae75e4bb28fe61eb8f47b9aff
更新:2015/03/21组卷:704
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