Задача. На отрезке 𝐴𝐶 отметили точку 𝐵. В одной полуплоскости относительно прямой 𝐴𝐶 построили два равносторонних треугольника: 𝐴𝐵𝐾 и 𝐵𝐶𝑁. 𝐵𝑀 – медиана треугольника 𝐵𝐾𝑁. Найдите отношение (𝐴𝑁 + 𝐶𝐾)/𝐵𝑀.
Задача. На отрезке 𝐴𝐶 отметили точку 𝐵. В одной полуплоскости относительно прямой 𝐴𝐶 построили два равносторонних треугольника: 𝐴𝐵𝐾 и 𝐵𝐶𝑁. 𝐵𝑀 – медиана треугольника 𝐵𝐾𝑁. Найдите отношение (𝐴𝑁 + 𝐶𝐾)/𝐵𝑀.
Groups are also not fully encrypted, end-to-end. This includes private groups. Private groups cannot be seen by other Telegram users, but Telegram itself can see the groups and all of the communications that you have in them. All of the same risks and warnings about channels can be applied to groups. Despite Telegram's origins, its approach to users' security has privacy advocates worried. "Someone posing as a Ukrainian citizen just joins the chat and starts spreading misinformation, or gathers data, like the location of shelters," Tsekhanovska said, noting how false messages have urged Ukrainians to turn off their phones at a specific time of night, citing cybersafety. On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on “large one-to-many channels.” He pledged that ads would be “non-intrusive” and that most users would simply not notice any change. On Feb. 27, however, he admitted from his Russian-language account that "Telegram channels are increasingly becoming a source of unverified information related to Ukrainian events."
from jp
