Usando o ciclo trigonométrico, identifique se são (V) verdadeiras ou (F) falsas as afirmativas que se seguem.

(___) sen(5π/4) = - sen(45°)
(___) cos(5π/4) = - cos(45°)
(___) tg(5π/4) = tg(45°)
(___) sen(3π/4) = - sen(45°)
(___) cos(7π/4) = - cos(45°)

a. V – F – F – F – V.
b. F – V – F – V – V.
c. V – V – V – F – F.
d. V – F – V – F – F.
e. F – F – V – V – F.
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