1. The problem statement, all variables and given/known data Simplify this expression: csc(x)sqrt(sec^2(x)-1) with 0 less than or equal x less than pi/2. 2. Relevant equations 3. The attempt at a solution Not really sure what they want here, but would a good place to start be to square the entire expression to get rid of the square root or would that make things more complicated? and what is meant by x being between 0 and pi/2?