bob is and he likes watching tv very much错了- -平行四边形ABCD中,BG⊥CD,且AB=BG=BE,AE交BG于点F.(1)若AB=3,∠BAD=60°,求CE的长。(2)求证:AD=BF+CG
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 11:40:24
xRNQ63aL4g.8S Mh6lZKR@I?EgxaC>er묽֞Ύ&i2&5Ӝ CsK4=͢XCcvYNn܍RԪ}5jE2Vm3"
bBcL$f5ĄpqOYz͕
0,|#Qǿ~ j.J1*d/sk'ƟH< Kb_9Kؘ@5MaĘ|!?<EsS=3鑩z4J7TaQ1JAYӘH8LiB.+S!oO08 OjJ_R/0 b.DԀyhC/ E
D㡭>5%c- f>%PtTw>" ݕ>pgVm^LH`$ƭB0$d[j٭-MCeD\BQxL{i-٫NBL8"1 ٭Z#tw~7{T 0Mb$#@~!I I1zsZUgOеy57Sjݭc݉HA+np`[Ny#885y
{]<|mW.o$Hk
bob is and he likes watching tv very much错了- -平行四边形ABCD中,BG⊥CD,且AB=BG=BE,AE交BG于点F.(1)若AB=3,∠BAD=60°,求CE的长。(2)求证:AD=BF+CG
bob is and he likes watching tv very much
错了- -
平行四边形ABCD中,BG⊥CD,且AB=BG=BE,AE交BG于点F.
(1)若AB=3,∠BAD=60°,求CE的长。
(2)求证:AD=BF+CG
bob is and he likes watching tv very much错了- -平行四边形ABCD中,BG⊥CD,且AB=BG=BE,AE交BG于点F.(1)若AB=3,∠BAD=60°,求CE的长。(2)求证:AD=BF+CG
(1)AB=3,则BG=BE=3.
∠BAD=60°,则∠BCA=60
在直角三角形BGC中,∠C=60,直角边BG=3,不难得出BC=2√3
则CE=2√3-3
(2)做辅助线BP⊥AE,交点为E,计算角度关系,不难得出∠ABC=120 => ∠EAB=30 => ∠ABP=60 =>∠PBF=30
再来计算边,AB=3 得出BP=1.5,得出BF=√3
由上一问可知,CG=√3,BC=2√3
所以 BC=BF+CG
所以AD=BF+CG
倾盆大雨、未雨绸缪、雨后天晴、瓢泼大雨
Bob likes sports and he is_____填空
Bob ____playing football and he is good at it.He plays_____RonaldoA.likes;likes B.like;like C.likes;liking D.likes;like
I have a dog and its name is Bob.He likes playing basketball as well as painting.用英语解释句子
He likes swimming ,and he is a gooHe likes swimming ,and he is a good ( ) .
Bob likes sports and he is_____ (填的中文意思是 在足球俱乐部里)
阅读理解.bob likes watching tv very much.he is alwaylate for dinner.at
he is very___,because he likes talking and laughing.
英语填空vegetables and chinese tea are healthy food and d_______.bob likes eggs .he eats tuo eggs f________ breakfast.
He is Bob and he is my uncle's son.的同义句
英语翻译BOB is an old man.He likes walking in the street after supper.And he goes home at seven o’clock.But a car stops at his house one evening.A policeman helps him get out.Then he tells Bob’s wife:“The old man got lost (迷路) in the st
mr wang likes kids,and he is good ____them.
john likes swimming very much.and he is a good( ).
He likes all the subjects,and PE is _____ favorite.
Liuhua likes football and he is good at s____goals
Tony is really quiet and he likes beging a___
He likes ()and Spiderman 2 is his ()movie
he is a boy,likes playing football./he is a boy and he likes playing football.语法上有错么?
Bob is lazy and he is still ( )(sleep) in his room