___ -\/ 2 sin(t) > ------- 2
sin(t) > (-sqrt(2))/2
/ / 5*pi\ / 7*pi \\ Or|And|0 <= x, x < ----|, And|x <= 2*pi, ---- < x|| \ \ 4 / \ 4 //
((0 <= x)∧(x < 5*pi/4))∨((x <= 2*pi)∧(7*pi/4 < x))
5*pi 7*pi [0, ----) U (----, 2*pi] 4 4
x in Union(Interval.Ropen(0, 5*pi/4), Interval.Lopen(7*pi/4, 2*pi))