Предмет: Геометрия, автор: dukadanila

Из точки B к окружности проведены две касательных, расстояние между точками касания с окружностью которых равно 24 см. Найдите длины касательных, если радиус равен 10 см.

Ответы

Автор ответа: genius20
0
1. Построим рисунок.
2. Найдём C_2A_1=1/2 *C_2C_1=24*1/2=12..
3. По рисунку видно, что в треугольнике AC_2A_1 катет больше гипотенузы, а значит, решения этой задачи нет либо условие неверное: расстояние между точками касания всегда меньше диаметра, то есть 20 см в данном случае.
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I __ (not need) an umbrella if it __ (not rain).
She __ (get) fit if she __ (walk) every day 3 km. But she is too lazy.
If he __(not/know) the word, he always __________ (look) in a dictionary.
He __ (lose) weight if he __ (stop) eating so much. However, it's only an imagination.
If I __ (see) John, I __ (tell) him your news tomorrow.
Meg sleeps only 5 hours a day. If she __ (sleep) longer, her health __ (improve) fast.
If she __ (want) to talk to me, she __ (ring up). But she doesn't.
If you __ (need) help with your car tomorrow, my father __ (help) you.
I __ (understand) Mr. Brown if he __ (speak) slowly. But he doesn’t.
You __ (make) a fortune if you __ (take) my advice. Too bad that you never listen to me!
I __ (not need) an umbrella if it __ (not rain).
She __ (get) fit if she __ (walk) every day 3 km. But she is too lazy.
If he __(not/know) the word, he always __________ (look) in a dictionary.