Question

ЛЕГКИЕ 15 БАЛЛОВ ГЕОМЕТРИЯ!

Answer 1

Ответ:

AB = 15

tgB = 3/4

sinB = 3/5

cosB = 4/5

Объяснение:

AB^2 = CA^2 + CB^2 = 81 + 144 = 225 => AB = 15

tgB = CA/CB = 9/12 = 3/4

sinB = CA/AB = 9/15 = 3/5

cosB = CB/AB = 12/15 = 4/5