Question

sen 2π – cos 4π + 2. sen 11π/2

Answer 1

Resposta:

-3

Explicação passo-a-passo:

$sen2\pi -cos4\pi +2sen\frac{11\pi }{2} =0-1+2sen(\frac{8\pi }{2} +\frac{3\pi }{2}) =-1+2sen(4\pi + \frac{3\pi }{2})= -1+2sen\frac{3\pi }{2}=-1+2(-1)=-1-2=-3$