Question

me ajudem porfavor ...​

Answer 1

Resposta:

x² = 4² + (4√3)²

x² = 16 + 16*3 = 16+48 = 64

x = √64

x = 8

sen α = 4/x = 4/8 = 1/2

α = 30°

α + β + 90° = 180°

30° + β + 90° = 180°

β = 180° - 90° - 30°

β = 60°