Question

Resolva:

5 sen\pi + 3 cos \pi - 4 sen 3\pi / 2

Answer 1

sen de pi = 0

5.0 = 0

 

cos de pi = -1

3.-1 = -3

 

sen de 3pi/2 = -1

4.-1 = -4

 

0 + (-3) - (-4) = -3 + 4 = 1