Ответы на вопрос:
Tg²a+ctg²a+1/sin²a+1/cos²а=71/cos²а-1+1/sin²a-1+1/sin²a+1/cos²а=7 2/cos²а+2/sin²a-2=7 1/cos²а+1/sin²a=9/2 (sin²a+cos²а)/cos²а*sin²a=9/2 1/cos²а*sin²a=9/2 cos²а*sin²a=2/9
Популярно: Математика
-
Вадим12321411.05.2023 07:56
-
ArianatorLove30.12.2022 11:28
-
sladkoegka0321.12.2022 09:16
-
ekaterinatrushkova01.03.2021 13:24
-
Настюся22710.02.2020 14:29
-
aysun22222228.06.2022 09:22
-
Uprava09.01.2021 23:19
-
solov131.05.2023 11:22
-
chcuvivhcyxu15.07.2022 09:31
-
AlinaSerg11.11.2022 16:44