Question

sen 5pi/6+ cos 5pi/6

Answer 1

Sen 5π/6 + cos 5π/6
Sen 5.(180)/6 + Cos 5.(180)/6
Sen 5.30 + Cos 5.30
Sen 150° + Cos 150°
Sen 30° + Cos -30°
1/2 + (-√3/2)
1/2 -√3/2
(1-√3)/2


Bons estudos ;)