В
Все
М
Математика
О
ОБЖ
У
Українська мова
Д
Другие предметы
Х
Химия
М
Музыка
Н
Немецкий язык
Б
Беларуская мова
Э
Экономика
Ф
Физика
Б
Биология
О
Окружающий мир
Р
Русский язык
У
Українська література
Ф
Французский язык
П
Психология
А
Алгебра
О
Обществознание
М
МХК
В
Видео-ответы
Г
География
П
Право
Г
Геометрия
А
Английский язык
И
Информатика
Қ
Қазақ тiлi
Л
Литература
И
История
cjhjrf1212
cjhjrf1212
18.09.2021 09:29 •  Английский язык

Gw. read and say the paragraphs in correct logical order. a – while the explorers were hiking with fl ashlights, they came across colourful centipedes and a bird-eating tarantula. at down the students got up to watch birds and animals. they watched everything around them: birds, monkeys, insects, etc. b – during the excursion, a guide grabbed a caiman, a tropical crocodile which was examined and released. all enjoyed swimming in the river though the water was too dark. it was a safe place because piranhas wouldn’t attack unless there is blood in the water. c – the students had prepared for this trip, run by cetfi, by studying rainforest ecology and wildlife, as well as south american history. d – one cold grey day in march, a group of students left their school in millbrook, new york, for south america. when they reached iquitos, peru, on the amazon river, they were met by intense humidity (dampness, wetness) and heat. e – back at school the students raised money for a peruvian zoo that protected rainforest animals. f – they went by boats down the yarapa river and 90 miles away to yacumama – deep in the heart of the amazon rainforest.

Показать ответ
Ответ:
ZeBrAiL2TW
ZeBrAiL2TW
19.03.2023 00:13
Сначала формулы . затем формулы двойного угла sin2α=2sinαcosα cos2α=cos²α-sin²α=cos²α-(1-cos²α)=2cos²α-1⇒  2cos²α=1+cos2α cos2α=cos²α-sin²α=1-sin²α-sin²α=1-2sin²α⇒  2sin²α=1-cos2α а) сos75°cos105°=cos(90°-15°)·cos(90°+15°)== sin15°(-sin15°)=-sin²15°=-(1-cos30°)/2=(cos30°-1)/2= ((√3/2)-1)/2=0,25√3-0,5б) sin75°sin15°=°sin(90°-15°)sin15°=cos15° sin15°=sin30°/2=1/4=0,25в) sin105°cos15°=sin(180°-75°)cos15°=sin75°cos15°=sin(90°-15°)cos15°=cos15°cos15°=(1+cos30°)/2=(1+(√3/2))/2=0,5 +0,25√3 2 способ формулы cosα·cosβ=0,5cos(α-β)+0,5cos(α+β) sinα·sinβ=0,5cos(α-β)-0,5cos(α+β) sinα·cosβ=0,5sin(α+β)+0,5sin(α-β) а) сos75°cos105°=0,5cos(75°-105°)+0,5cos(75°+105°)=0,5cos(-30°)+0,5 cos180°==0,5· √3/2+0,5·(-1)=0,25√3-0,5б) sin75°sin15°=0,5cos(75°-15°)-0,5cos(75°+15° )=0,5cos60°-0,5 cos90°=0,5·0,5=0,25в) sin105°cos15°=0,5sin(105°+15°)+0,5sin(105°-15°)= =0,5sin120°+0,5sin90°==0,5 sin(180°-60°)+0,5·1=0,5 sin 60°+0,5=0,25√3+0,5
0,0(0 оценок)
Ответ:
sanekpalyxa
sanekpalyxa
01.08.2022 10:46

Needless to say that sport plays an important role in our life. It gives us much pleasure and many moments of joy. There are a lot of kinds of sports such as swimming, wrestling, cycling, box, football, hockey, track and field athletics. All of them are useful and exciting and help us to keep feet.

As for me I am fond of jogging and figure skating. I was going in for figure skating when I was a child and achieved good results. This is very elegant sport. You should control your body very well, if you wish to skate gracefully. And you should apply great efforts at every coaching. Now every winter if I have spare time, I go to the nearest skating-rink with my friends and we have much pleasure, skating together. I don’t forget to watch Figure Skating Championships, where our best sportsmen and sportswomen perform. Their compulsory and free programmes are beyond description and one can’t help admiring them.

In spring and summer I prefer to go in for jogging. This is very popular sport, very useful for your health. You slowly run and enjoy the beauty of nature around. Millions of people all over the world are fond of jogging as it helps to keep your heart healthy and your figure – slim.

Speaking about sports I can’t help saying about football, because this is very spectacular kind of sports. There are a lot football teams, football events, fan clubs in almost every country of the world. Some football players are world-famous, they make excellent careers and take part in each championship. Football matches attract a lot of spectators, who come to support their favourites.

As for me, I am a football fan of Italian team “Roma” and my favourite player is Francesco Totti. I remember having been taken to the match between “Roma” and their competitors. The stands were full of spectators. They shouted to cheer the teams and swung the flags… The match started and 10 minutes later I saw a ball, flying from Totti into the goal. I was very happy! I was sure that my favourite team could be only the winner!

The match was very exciting and the players were determined only to win. They did their best and wont the game with a score 3 to 2. I was very proud of their victory. No doubt, “Roma” is one of the best teams in the world!

Thus we see how many different kinds of sports exist and can please us. I think it necessary that everybody should go in for sports

0,0(0 оценок)
Популярные вопросы: Английский язык
Полный доступ
Позволит учиться лучше и быстрее. Неограниченный доступ к базе и ответам от экспертов и ai-bota Оформи подписку
logo
Начни делиться знаниями
Вход Регистрация
Что ты хочешь узнать?
Спроси ai-бота