Задача 58816 ...

60533aa6bff3af66c698e6b4

26.03.2021 10:44:21

1+tg α +tg^2 α
--------
1+ctg α+ctg^2 α

5f3ffd6fb5ac0b3cc606fb26

26.03.2021 15:40:03

(1+tg α +tg^2( α ))/(1+ctg α +ctg^2( α ))=
=tg^2( α )(ct^2( α )+ctg α +1)/(1+ctg α +ctg^2( α ))=tg^2( α )