Профиль пользователя SashaShevcova
Решения
1)sim^2A = 1/1+ctg^2A
sim^2A = 1/1+9*11
sim^2A = 1/100
simA = √(1/100)
simA = 1/10
simA = 0.1
Ответ:simA = 0.1
2)cos^2A = 1/1+tg^2B
cos^2A = 1/(1+16/9)
cos^2A = 1/(25/9)
cos^2A = 9/25
cosA = √(9/25)
cosA = 3/5
cosA = 0.6
Ответ:cosA = 0.6
sim^2A = 1/1+9*11
sim^2A = 1/100
simA = √(1/100)
simA = 1/10
simA = 0.1
Ответ:simA = 0.1
2)cos^2A = 1/1+tg^2B
cos^2A = 1/(1+16/9)
cos^2A = 1/(25/9)
cos^2A = 9/25
cosA = √(9/25)
cosA = 3/5
cosA = 0.6
Ответ:cosA = 0.6
Ответ выбран лучшим
2/10 x 1/2 + 2/10 = 2/20 + 2/10 = 2/20 + 4/20 = 6/20 = 3/10 = 0.3