Question

Se Tgx = m e Tg2x = 3m p/ m > 0, calcule o valor do ângulo de x.

Answer 1

Tg2x = 3m => 2tgx/ 1-tg²x

2m/ 1- m² = 3m => 1-m² = 2m/3m => -m² = -1 + 2/3 =>

m = V3/3

Tgx = V3/3

x = 30°