Đáp án:
Giải thích các bước giải:
`sin^2(30°)+sin^2(60°)-tan30°`
`=cos^2(60°)+sin^2(60°)-cot60°`
`=1-cot60°`
`=1-(sqrt{3})/3`
`=(3-sqrt{3})/3`
Câu 5,6,7 phần hai nhé kiều ở lầu ngưng bích nhé
I) 1-I am not very good at tennis.Actually,i began to learn it 3 days ago. ⇒.................................................̣(take) 2-People buy different types of silk products such as cloth,scarves,ties and dresses in Van Phuc village in Hanoi. ⇒Different types of............................................. 3-The neighbors are playing music too loud.It is such an annoyance! ⇒It....................................................... 4-He often asks me some personal questions.I don't like it at all. ⇒I wish............................................................... 5-I went to university in early 2010.My elder brother went to study abroad in 2006. ⇒By................................ II) 1-In my country,it( not rain)........................ much in winter. 2-Would you like (join)...............................my class next Sunday? We(visit)....................the local museum. 3-Are you planning (go)..................on holiday this year? 4-They do not understand how important the (conserve).............of natural resources is 5-You can (reduction)..........................the amount of gas by traveling by bicycle or public transport. 6-It took me nearly 2 days to sort them out !!! It was so time(consume) ....................... em vote 5s ai lam xog nhanh a
Phân tích đa thức thành nhân tử 1) 2ab - x ² -b ² + 9y ² 2)12ax + 16y ² - 4a ² - 9x ² 3) x ² - y ² + 8(x - 2) giúp em với
Cho a + b = 1. Tính giá trị của các biểu thức sau: M = a3 + b3 + 3ab(a2 + b2) + 6a2b2(a + b).
mọi người oiư giúp mình với may mai e thi rồi
1 ta 5kg = ......kg ; 2 tấn 175 kg = ...........kg ; 1256 g = ........kg ......g 2hg 4g =..........g 12dag = ..........g 7543g = .........hg ........g
Mong các bạn giải nhanh giúp mik nha.mình vote cho.
Trình bày những suy nghĩ của em về mối quan hệ giữa Việt Nam và Trung Quốc trước đây và trong giai đoạn hiện tại
Giúp mình với mọi người ơiii 😭 sẽ vote 5 sao ạ, help me 😢 *Viết đoạn văn diễn dịch khoảng 10-12 câu nêu cảm nhận của em về vẻ đẹp của Thuý Vân, trong đv có sử dụng câu phủ định và phép thế
I) 1-i don't like it when poor people are not respected by some richer ones -.................................................................................................................................(look) 2-Despite his hunger,he turned down on any food that his mother cooked for him -Although ............................................................................................................................. 3-How could you forget to inform her about our important party?How absent -minded you were! -It............................................................................................................................................ 4-"You could really put all the assignments aside and let your hair off for one day.",suggested my Dad. -My Dad ................................................................................................ 5-people are overusing plastic bags,which can do harm to our environment -Plastic bags..................................................................... II) 1-It/very hard/family members/different generations/live/harmony/if /they/not /try/understand/each other. 2-In spite/many/drawbacks/live/big cities/it/can't/deny/big cities/attract/more and more people/come/work/live. 3-Some old buildings/city center/knock down/recently/make room/new shopping mall. 4-past/students/not /use/have computers/projectors/or/technological devices/classrooms. ̀̀5-City people/hardly/talk/visit/neighbors/they/have/work/from dawn to dusk. em vote 5s ai lam nhanh,tot a
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