Question

10) Calcule o valor de cos 19π/2 *
A) 1
B) -1
C) 0
D) 1/2
E) - 1/2

Answer 1

Resposta:

cos(19π/2)

cos(3π/2 + 2 × 4π)

cos(3π/2)

0

Alternativa : C/ 0.

Espero Ter Ajudado !!