Question

Calcule o valor de:

a) cos 1560°

b) cos 1035°

c) cos 19π/6

d) cos 22π/3

e) cos (-270°)

f) cos 43π/4

Answer 1

a) -1/2
b) raiz (2/2)
c) - raiz (3/2)
d) -1/2
e) 0
f) - raiz (2/2)