Question

Va rog am nevoie urgent ​

Answer 1

Răspuns:

Explicație pas cu pas:

AB = 3 cm

AC = 4 cm

BC^2 = AB^2 + AC^2 = 9 + 16 = 25

BC = √25 = 5 cm

sin B = AC/BC = 4/5

cos B = AB/BC = 3/5

tg B = AC/AB = 4/3

ctg B = AB/AC = 3/4

________

sic C = AB/BC = 3/5

cos C = AC/BC = 4/5

tg C = AB/AC = 3/4

ctg C = AC/AB = 4/3