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共找到 866857 与若sin∠AMC=33 相关的结果,耗时498 ms
已知ab是平面内两个互相垂直的单位向量若c满足(a-c)点乘(b-c)=0则c的模长最大值是多少.是不是2还有另一个题.a.b.c为三角形三边向量m=(根3-1)n=(cosA,sinA)若m垂直于n且acosB+bcosA=csinC角B多大
数学
向量m=cos (A-B)/2*i+根号5/2sin(A+B)/2*j 其中ij 为互相垂直的单位向量,若向量m=3*根号2/4求tanAtanB的值
数学
He is not my close friend and not one who I can ________ when I"m in trouble.He is not my close friend and not one who I can ________
英语
hen I'm in tro
I"m ____(真正地)busy but happy here.I started my ____(课)at Etom School.At the ____(开始)of this term,I ____(不能)understand the teacher in cl
英语
ss.I'm _____(幸
一道关于时态的高中英语选择题I"m trying to find yesterday"s newspaper.Have you seen it?I"m afraid that I __threw____it away.I thought you have finish
英语
d reading it.办
已知集合M={1,2,3,4,5,6},集合A、B、C为M的非空子集,若∀x∈A,y∈B,z∈C,x<y<z恒成立,则称“A-B-C”为集合M的一个“子集串”,则集合M的“子集串”共有个.
数学
根据情景,用合适的句子不全对话A:Good morning!I"m a repoter from CCTVA:Good morning!I"m a repoter from CCTV.May I ask you some questions?B:________wha
英语
are they?A;__
-Jenny,would you like to come to my party on Sunday afternoon?-_____.A.sure,I'd love to B.Sorry,I have to study for a testC.I'm sorry
英语
'm late.D.Both
I`m afraid I don`t have enough money for the car (同义句转化)I`m afraid I __ __ the car
英语
英语同义词转化there is too muchu furniture in my room I must throw away some pieces.I have to___ ___ ___ some of the funniture in my room I'm
英语
afraid there i
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