Предмет: Математика, автор: alinahohlova20

чему равен квадрат косинуса половинного угла

Ответы

Автор ответа: Zzzzлюка

cos в квадрате альфа пополам равен 1+cosальфа деленое на два
PS Сори, что не формулой, но так проще написать) Надеюсь поняла)

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: 20040911dasha

СРОООООООЧНОООООО
1)He ... his former apartment already. *

sold

has sold

was selling

sells

2)The doctor ... my little brother now. *

examined

is examining

examines

has examined

3)Every summer our family ... holidays at the seashore. *

spend

spents

spends

spended

4)Hubert ... this task by the next weekend. *

will have done

does

is doing

has done

5)All students ... their finals yesterday from 1 till 3 a.m. *

will take

have taken

took

were taking

6)I hope you ... back in a minute. *

comes

have come

will come

came

7)She ... that bag about ten years ago. *

buys

buyed

bought

was buying

8)Your uncle ... for you near the cafe tomorrow at 8. *

has waited

will wait

will be waiting

waits

9)By that time he ... to another city, I know it. *

had moved

moves

moved

was moving

10)At that moment the king ... near the window listening to our conversation. *

was standing

stands

stood

has stood

11)Usually my mother ... bacon and eggs for breakfast. *

cook

is cooking

cooks

has cooked

12)I'm sure we ... all necessary preparations by the next Friday. *

will be doing

do

will have done

will do

13)The pupils ... the word dictation at the next lesson. *

write

have written

wrote

will write

14)My father-in-law ... never ... to this modern cafe. *

has ... been

had ... been

was ... being

will ... be

15)What ... you ... at this moment? *

will ... do

are ... doing

have ... done

do ... do

16)Last winter they ... a lot of sights in this city. *

visited

visit

had visited

were visiting

17)I think, the moment we will come in, they ... TV. *

will be watching

will have watch

watch

will watch

18)By the time boys finished that terrible game, girls ... all needed things. *

have bought

had bought

buy

bought

7 лет назад

Предмет: Немецкий язык, автор: Fox19918209

Помогите с немецким срочно

7 лет назад

Предмет: Математика, автор: kalinina94

помогите пожалуйста, очень срочно нужно

7 лет назад

Предмет: Математика, автор: depesi33l

В колхозе собрали 3480ц картофеля.Две восьмых собранного картофеля отложили на семена,а остольное продали .Сколько центнеров картофеля продали?

10 лет назад

Предмет: Геометрия, автор: makcum432

помогите с геометрией. В прямом параллелепипеде ABCDA1B1C1D1 основанием служит ромб. Сторона ромба равна а, угол BAD=60о. Диагональ параллелепипеда B1D составляет с плоскостью боковой грани угол 45о. найдите длину бокового ребра и площадь сечения

10 лет назад