___ \/ 3 cos(t) > ----- 2
cos(t) > sqrt(3)/2
/ / pi\ / 11*pi \\ Or|And|0 <= x, x < --|, And|x <= 2*pi, ----- < x|| \ \ 6 / \ 6 //
((0 <= x)∧(x < pi/6))∨((x <= 2*pi)∧(11*pi/6 < x))
pi 11*pi [0, --) U (-----, 2*pi] 6 6
x in Union(Interval.Ropen(0, pi/6), Interval.Lopen(11*pi/6, 2*pi))