how do u state the period of a function?

Question

for ex.
f(x)=sin((1/2)x)

Answer 1

for y = sin kx, the period is 2pi/k radians or 360/k º

so your period is 360/1/2) = 720º

BTW, the same rule applies to the cosine function, but for the tangent function the period is pi/k radians or 180/kº