Question

cos($\frac{ \pi }{3 }$

Answer 1

Hi, as Pi = 180° in the trigonometric

Then , pi/3 = 180°/3

Pi/3 = 60°

Then,

Cos ( 60° ) = 1 / 2

Because, Sen(30) = Cos(60)

And as Sen(30) = 0.5 = 1/2

Then, Cos(60°) = 0.5

Answer 2

The question that you have is in radians.
To convert radians to degrees, you multiply the number by $\frac{180}{ \pi }$.
Therefore, the question in degrees is: