Предмет: Геометрия, автор: viktoriadrizd13

У прямокутному трикутнику гіпотинуза дорівнює 28 см, а гострий кут 30°. Знайти катети та другий гострий кут ​

Ответы

Автор ответа: NataVietnam
0

Ответ:

угол =60

Катеты 14 см и  примерно 24,25 см

Объяснение:

Катет , лежащий напротив угла в 30 градусов, равен половине гипотенузы. 28 пополам = 14

Второй катет находим по теореме Пифагора

28 в квадрате= 14 в квадрате + х в квадрате

второй катет равен корню из 588

Угол находим:

180-90-30= 60

Предыдущий вопрос
Следующий вопрос
Интересные вопросы
Предмет: Английский язык, автор: ололошкп
задание под буквой б
2 года назад
Предмет: Английский язык, автор: aiselsalahova23
Можете помочь перевести текст по английскому языку ?
English Children in the Past
Things changed little for children during the 18th century. Chil-dren from poor families had to work as soon as they were able. When they were not working children played simple games. Dis-cipline was very strict.
For many children in the early 19th century things grew worse! The industrial revolution created many jobs and needed child labour (труд). When children worked in textile factories they often worked for more than 12 hours a day. In 1833 the Parliament passed a law that didn’t allow children under 9 to work in textile factories. It said that children aged 9 to 13 must not work for more than 12 hours a day or 48 hours a week. It also said that children aged 13 to 18 must not work for more than 69 hours a week. Nobody under 18 was allowed to work at night (from 8.30 pm to 5.30 am). Children aged 9 to 13 had 2 hours of education a day. Conditions in coalmines were also terrible. Even children at the age of 5 worked underground. In 1842 a law didn’t allow children under 10 and women to work underground. In the 19th century boys had to climb up chimneys to clean them. This barbaric practice was ended by the law in 1875. Gradually the law protected children more and more. In the early 19th century the churches provided schools for poor children. From 1833 the government provided them with grants. There were also schools for girls. Usually women, who ran such schools, taught girls a lit-tle reading, writing, arithmetic, music and sewing. In 1880 school became compulsory for 5 to 10 year olds. Middle class boys went to grammar schools. Discipline in 19th century schools was very strict. Beating children was normal.

Можете помочь ответить на вопросы к тексту ?
1. in the 18th century children who were had to work .
а) naughtly b) strong c) not rich
2. in the 19th century a life became for children .
a) easier b) more difficult c) more interesting
3. industrial revolution created .
a) new toys b) jobs for children c) different fun activities
4. At the beginning of the 19th century children because there was no law.
a) had to work long hours b) had no right to work e) worked only with their parents 5. The Parliamentary law of 1833 didn't alow children and teenagers .
a) to work in textile factories b) to work at night c) to get education
6. The law changed the working hours for smaller chidren to a week.
a) 12 b) 48 c) 13
7.The worst conditions were in .
a) the textile factories b) the mines c) rich people's houses
8. The most dangerous work was .
a) underground b) in factories c) to climb chimneys
2 года назад
Предмет: Русский язык, автор: ДенисМотылев1
полуотворенная разобрать по составу
2 года назад
Предмет: Русский язык, автор: Лена5211
написать окончание род число и падеж слов: глубокую нору, В Мещерском крае,тёплой водой, сосновых лесов, суетливый стук, деревенского сторожа, лесные озера, обширные болота, в рыжий хвои
8 лет назад
Предмет: Английский язык, автор: 227761
помогите найти ключевое слово пж дам 5 баллов срочно
8 лет назад