Предмет: Геометрия, автор: nikitazora11

У прямокутному трикутнику ABC катет BC = 12 см; tgA = 5/6. Обчисли довжину катета AC.​

Ответы

Автор ответа: Dmitro7
6

Ответ:

Можемо скористатися тригонометричним співвідношенням для тангенсу кута:

tgA = BC/AC

Підставляємо відомі значення:

5/6 = 12/AC

Далі розв'язуємо рівняння відносно AC:

AC = 12 / (5/6) = 14.4 см

Отже, довжина катета AC дорівнює 14.4 см

09mariiamariia: супер!!!
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Українська мова, автор: sashanaum857
скласти текст " Шкільне життя" (6-8 речень), уживаючи складноскорочені слова
11 месяцев назад
Предмет: Английский язык, автор: Аноним
62
GRAMMAR
Circle a or b.
a Who
1 Are you
2 She
3 He
a work b working
4 A
8
10
a isn't b doesn't
's your name?
b What
a doing b is doing
a Is it b It's
5 Can you talk now, or
?
a are you driving b do you drive
6
to work by train?
15
a Do you usually go
b Are you usually going
7 I usually wear trousers, but today
a skirt.
a I wear b I'm wearing
9 There aren't
staying in a very good hotel.
at the moment?
12 It
his homework now.
13 Where
o'clock?
a was
14 Karen
raining? B No, it isn't.
a There is b There are
a some b any
two beds in the room.
a wasn't
a Are there b There are
11 Is there a swimming pool? Yes..
a there's b there is
a was b were
any towels in the bathroom?
windows.
b were
very hot last summer.
you yesterday at six
at school yesterday.
a not was
at home last night?
a They were b Were they
VOCABULARY
a Complete the phrases with a verb from the list.
arriving carrying phoning staying waiting wearing
We're staying in a beautiful hotel in the mountains.
1 A What are you doing here?
B I'm
for my girlfriend. She's late.
2 A Who are you
3 Go and help that woman. She's
4 Look! The train's
5 Why are you
b Write the clothes.
shoes 1
2
c Complete the words.
?B My mother. It's her birthday.
a very big suitcase.
. Can you see it?
a coat? It isn't cold.
Would you like to have dinner in the hotel restaurant?
1 When you arrive at a hotel you go to r
2 You're in room 1122. Take the l
3 I want to buy presents for the children. Is there a
sh
8
4 The b
e Look at the picture.
1 The suitcase is
2 The laptop is.
3 The picture is.
4 The boots are
5 The suitcases are
's very small. There's a shower, but there isn't a bat
5 You can leave your car in the hotel c
P.
d Complete with in, on, or at.
Oh no! The keys are in
my car.
1 A Where's your mother? B I think she's
2 A Mike? It's Tim. B Sorry, I can't hear you. I'm.
3 A Is John. work today?
B No, he's
home. One of his children isn't well.
to check in.
to the 11th floor.
the bed.
the wall.
the chair.
Complete the sentences with in, on, or under.
the bed.
the kitchen.
the cupboard.
a train.
11 месяцев назад
Предмет: Алгебра, автор: red9741
6. В одному ящику удвічі більше яблук, ніж у другому. Скіль- ки яблук у кожному ящику, якщо у двох ящиках разом 75 яблук?​
11 месяцев назад
Предмет: Русский язык, автор: zheniaraguds
Синтаксический разбор предложения 1) в последних числах сентября (презренной прозой говоря).
6 лет назад
Предмет: Русский язык, автор: serega202141
Заполните пропуски в тексте.

Всё стихотворение М. И. Цветаевой построено на ........
лирической героини и мужчины, милого, к которому она обращается. Такой приём называется .......?
.

"Жить приучил в самом огне,

Сам бросил — в степь заледенелую!

Вот что ты, милый, сделал мне!

Мой милый, что тебе — я сделала?"
6 лет назад