Question

URGENTE PFV (resolver cada uma com as respostas roxas)

Answer 1

Vamos là.

a)

sen(x) = √2/2

x = 45°,   x = 225°

x = π/4, x = 3π/4

b)

cos(x) = -√3/2

x = 150°, x = 210°

x = 5π/6 , x = 7π/6

c)

sen(x) = -1

x = 270°

x = 3π/2

d)

cos(x) = -1

x = 180°

x = π