bai tap anh van 12 co dap an

... >0 thỡ: c(a c) + c(b c) ab Cõu 24: Gi ;; l gúc bt kỡ Chng minh rng: 4cos + + 4cos2 + + 4cos + 21 cos A + cos B + cosC Cõu 25: Chng minh rng vi mi tam giỏc ABC luụn cú: Cõu 26: Tỡm giỏ ... Cho thc , , y = x + x ++ = l ba gúc dng cú Tỡm giỏ tr ln nht ca biu F = + tan .tan + + tan .tan + + tan .tan Cõu 28: Cho vect phng r r r a = (1; m;2); b = ( m +1;2;1) ; c = ( 0; m - 2;2) ... ; ữ ữ; N ; ữ 4 12 2 4 12 2 b Ta cú: uuuu r a 5a 3 h AM = ; ; ữ 12 2 ữ 4 uuur a 5a 3 h AN = ; ; ữ 12 2 ữ 4 Din tớch tam giỏc AMN : S AMN 1 = 2 = 2 2 4 uuuu r uuur AM , AN = 1 a h + 75a2

Ngày tải lên: 17/09/2016, 09:53

... changed considerably and many people now travel even the shortest distances by car or bus (37) exercise combined with eating too many (38) and sugary foods has meant that many people are becoming ... changed considerably and many people now travel even the shortest distances by car or bus (37) exercise combined with eating too many (38) and sugary foods has meant that many people are becoming ... changed considerably and many people now travel even the shortest distances by car or bus (37) exercise combined with eating too many (38) and sugary foods has meant that many people are becoming

Ngày tải lên: 09/10/2016, 12:24

... BÀI TẬP TỪ VỰNG TỪ UNIT 1-8 LỚP 12 Compiled by Mrs Trang Anh Facebook: Mrstranganh87 BÀI TẬP TỪ VỰNG TỪ BÀI 1-8 LỚP 12 The fox tries to reach the fruit high up the tree ... society B socialize C social D socializing 110 English has become the main language of A communication B communicate C communicant D communicative 111.Do you think doing the household chores ... base from which we can go into the world with _ A confide B confidence C confident D confiding 130.My mother is a _woman She does all the household chores to make us more comfortable A caring

Ngày tải lên: 28/07/2020, 10:39

... cheaper than oranges  Apples are not 10.You can’t visit Moscow unless you get a visa  If you Sentence transformation 7B John smoked cigarettes when he was a young man  John used “Hand ... job  Despite He couldn’t afford to buy the car  He wasn’t 10.Couldn’t you have got a bus to the station?  Wasn’t it ? Sentence transformation 12B 1 Jane is a brilliant swimmer She presented ... expensive as oranges 10.If you don’t get a visa, you can’t visit Moscow Sentences transformation 7B 1 John used to smoke cigarettes when he was a young man He asked me to hand my books to

Ngày tải lên: 21/04/2021, 07:41

... particularly reI-evant to the course a student is applying for More challenging offers may be set to ensure that an applicant can cope with pressure and the demands of exams Advanced Extension ... job, and it may range in formality from a casual conversation to a series of serious (5) with an assortment of people working within the company Depending on the size of a company and ... are encouraged to study either four or five Advanced Subsidiary (AS) levels in Year 12 Applicants taking four subjects will not be disadvantaged compared with those taking five subjects The university

Ngày tải lên: 12/05/2021, 17:54

... be comfortable When they go out to enjoy themselves, they can wear almost anything At theatres, cinemas and concerts, you can put on what you like from elegant suits and dresses to jeans and ... in Indian and African cultures a Romantic b Arranged c Modern d Open Page 11 19 It’s sometimes hard to the right balance between your work and your home life a maintain b conserve b demand d support ... (51) like lobster and corn on the cob, cookies, shrimp, and fried chicken and other foods Better watch what other people (52) you eat with your hands, don’t lick your fingers to clean them Use the

Ngày tải lên: 20/10/2022, 16:33

... which he may count towards a degree In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester A Page 12 typical course consists of ... study at home a c an attendance record b a military record an academic record d a disciplinary record 57 Which of the following is useful for students’ future career? 58 American university students ... go on to further education as in any other European country c A smaller percentage of British students go on to further education than in any other European country d A smaller percentage of

Ngày tải lên: 20/10/2022, 16:34

... (F), and then answer the questions From 1975 till the major economic reforms of 1986, Vietnam followed socialist policies of high command economy and political centralization, extending the collectivization ... lifting of the economic embargo by the United States and made loans and grants by the IMF, World Bank, and Western donors possible True or false? 44 From 1975 to 1985, the Vietnamese economy was not ... reaffirmed their to economic liberalization a commitment b comment c command d compliment 17 The government devalued the currency to try to revive the economy, a stable b developed c stagnant d dynamic

Ngày tải lên: 20/10/2022, 16:36

... desert sand spreading the west, the Gibbon, Great Sandy, and Tanami Deserts comprise an enormous sandy area The dunes are separated corridors _low, open shrubland Hummock grasses grow the crest and ... of plants and animals can survive All deserts have very little water This means that only animals and plants that can (47) water for long periods of time can exist in the desert.' Plants in the ... 16 spinifex animal cactus 12 hummock 17 corridor slope camel 13 route 18 European stretch colony 14 pale 19 Australia plant 10 dune 15 survey 20 aborigine II Fill in each blank with an appropriate

Ngày tải lên: 20/10/2022, 16:37

... kinds of plants and animals can survive All deserts have very little water This means that only animals and plants that can (47) water for long periods of time can exist in the desert.' Plants in ... spreading advancing the edge of the Sahara to stop the the west, the Gibbon, Great Sandy, and Tanami Deserts comprise an enormous sandy area The dunes are separated corridors _low, open shrubland Hummock ... 16 spinifex animal cactus 12 hummock 17 corridor slope camel 13 route 18 European stretch colony 14 pale 19 Australia plant 10 dune 15 survey 20 aborigine II Fill in each blank with an appropriate

Ngày tải lên: 09/04/2023, 09:12

... study at home a c an attendance record b a military record an academic record d a disciplinary record 57 Which of the following is useful for students’ future career? 58 American university students ... d advance a in b by c on d through B Read the passage carefully, then choose the correct answer Normally a student must attend a certain number of courses in order to graduate, and each course ... credit which he may count towards a degree In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester A typical course consists of three

Ngày tải lên: 09/04/2023, 09:13

... (F), and then answer the questions From 1975 till the major economic reforms of 1986, Vietnam followed socialist policies of high command economy and political centralization, extending the collectivization ... lifting of the economic embargo by the United States and made loans and grants by the IMF, World Bank, and Western donors possible True or false? 44 From 1975 to 1985, the Vietnamese economy was not ... liberalization a commitment b comment c command 17 The government devalued the currency to try to revive the a stable b developed c stagnant d adopted in business d investment to economic d compliment economy,

Ngày tải lên: 09/04/2023, 09:13

... be comfortable When they go out to enjoy themselves, they can wear almost anything At theatres, cinemas and concerts, you can put on what you like from elegant suits and dresses to jeans and ... in Indian and African cultures a Romantic b Arranged c Modern d Open Page 11 19 It’s sometimes hard to the right balance between your work and your home life a maintain b conserve b demand d support ... (51) like lobster and corn on the cob, cookies, shrimp, and fried chicken and other foods Better watch what other people (52) you eat with your hands, don’t lick your fingers to clean them Use the

Ngày tải lên: 09/04/2023, 09:13

... upstairs. A. was coming B. is coming C. came D. comes 5. My mother is cooking now. She always _____ dinner for my family. A. cooks B. cooked C. cooking D. is cooking 6. I _____ in England for a few ... hunting and fishing trips (42) his father to Michigan, the locale of many his stories, and (43) he soon got acquainted with the life of the Indians and such virtues as courage and endurance, ... Would you like _____ to my party? A. come B. to come C. coming D. came. 6. My sister likes _____ and _____. A. dance/sing B. to dance/sings C.dancing/singing D. dancing/to sing 7. This school _____

Ngày tải lên: 06/04/2014, 16:14