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точка к лежит на стороне ав треугольника авс. Найдите угол между биссектрисой угла акс и прямой ас, если ав=10см,ск=4см,вк=6см сделайте рисунок и решение ответ должен быть 90 градусов
Ответы 1
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Смотрим рисунок:
смТаким образом
см, то есть видим равобедренный ΔАКС, в котором КО - медиана, биссектриса и высота.Значит
⊥
, то есть искомый ∠
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Автор:
binkybutler - 6 лет назад
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ДУЖЕ ПОТРІБНО!!! Перекласти текст на українську мову
"Will you answer my questions, please?" Holmes asked. "Have you a family or do you live alone?
"Quite alone, Mr.Holmes, I am not married."
"How many rooms do you occupy?"
"I have a sitting-room and a bedroom"
"Are your rooms upstairs"
"Both of them are on the ground floor"
"How many people live in the house? "
"Only three men except myself.They are students of the University"
"Do the pass your door every time when they go out?"
"There is no other entrance to the house"
"Who visited you after he papers came to you?" asked Holmes
"Young Ras, an Indian student who lives on the same floor. "
"Wa he followed by someone?"
"No, he wasn't"
"Why did he come?"
"He came in to ask me some questions about the examination. He used to come to me every time
when he wanted some information "
"Where were the papres at that time?"
"They were on my writing-table"
"Where did you leave the papres when you went out"
"I left them on my writing-table"
"How long were you absent?"
"About an hour"
"Did you lock the door when you went to see me?"
"I didn't need ti di it. I left my servant in the room."
"Why didn't he follow you?"
"He wanted to examine the room once more."
"Do you trust your servant? Is he honest?"
"I do. His honesty is absolutely above suspicion. I used to trust him with large sums of money"
"Whom do you suspect?"
"It is a very delicate question, I can't answer it."
"Can you tell me the characters of the three students?"
"Of course I can," said Soames
He told Holmes that of the three students, Maclaren, Ras and Gilford, the former was the eldest.The two were younger, both were good fellows and industrious too, although Ras was much more serious that Gilford. The teacher lnew that the latter worked as much as the Indian, but was less intelligent than Ras. Soames added that Gilford was a fine youth, the tallest of the three, who was fond of sports and was the best jumper in the college team. Unfortunately he was very poor and in greater need of the scholarship than the other two. He said that he would pass the examination more easily than the Indian whose weakest point was languages.
When Holmes asked what he would say about Maclaren, Soames, answerew that Mackaren was the least industrious and the most unprincipled man aming his fellow students, that he spent little time on his studies and felt very nervous on the days followed by the examinations
Знайдіть та випишіть такі еквіваленти словосполучень і речень.
Перший поверх, замикати на ключ, оглянути кімнату, працьовиті студенти, перший (у назвах), останній (у назвах), найменш працьовитий.
Скільки часу ви не були вдома? Кого ви підозрюєте? Його чесність поза підозрою. Він любив спорт. Йому дуже потрібна була стипендія
Дайте відповіді на запитання
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Who visited Mr.Soames after the papers came to him?
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Did Mr.Soames suspect his servant?
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What was Ras' weakest point?
What kind of man was Maclaren?
Знайти у реченні та виписати речення які характеризують кожного з трьох студентів.-
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