Respuesta :

sin(4π/3)= -√3/2
cos(5π/6)= -√3/2
Hagrid
The correct answers are:

a) sin (4π/3) = [tex]- \frac{ \sqrt{3} }{2} [/tex]
b) cos (5π/6) = [tex]- \frac{ \sqrt{3} }{2} [/tex]

I hope this helps.