x < y
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cos x = 0; 0 ≤ x ≤ 360° x = 90° or x = 270° ( 90° + 180°)
-1 < x < 64, but if x is less than 0 then x can be any value.
"< 0" For example x < 0 means "x less than zero".
It depents from the value of x.If x>0 then, |x|=xIf x
Your question is simply, "solve: -x<x" This becomes "2x>0" which becomes "x>0" That is the final answer