Question

4) simplifique as expressões

a) y= 4 sen 3π/2 + cos 2π

B) y= 3 sen π + 5 cos 2π
2

C) y= 8 cos π + 3 sen π/2
2 cos π



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Answer 1

A) y= 4 sen 3π/2 + cos 2π

y= 4.(-1) + 1 = 0

B) y= 3 sen π + 5 cos 2π

y= 3.0 + 5.1 = 5

C) y= 8 cos π + 3 sen π/2

y=8.(-1) +3.1=-8+3=-5