1. The problem statement, all variables and given/known data Find the solution set of [sin^-1 x]>[cos^-1 x] where  denotes greatest integer function. 2. Relevant equations 3. The attempt at a solution I know that -∏/2 <sin^-1 x < ∏/2 0 < cos^-1 x <∏ But I am clueless what will happen if I enclose them within "those square brackets"!