Question

Exercitiul 5 (a,b,c)Rezolvare completa cu tot cu formula!!​

Answer 1

a)

tg60° = AC/AB => AC = AB·tg60° = 8√3 cm

∡B = 60° => ∡C = 30° => T30° => BC = 2AB = 16 cm

b)

BC√2 = AB = AC => AB = AC = 6√6 : √2 = 6√3 cm

c)

∡B = 30° => T30° => AB = BC/2 = 30/2 = 15 cm

AC = √BC² - AB² (Pitagora) = √900 - 225 = √675 = 15√3  cm