1. The problem statement, all variables and given/known data Find, by comparison with exact trigonometry, the angle, (provide a numerical value in degrees), above which the small angle approximation departs from the exact result by more than 1 percent. 2. Relevant equations Approx.: d = s = rθ Exact: d = 2*r*Sin(θ/2) 3. The attempt at a solution .01 = |Exact - Approx.|/Exact (θ/2)*Csc(θ/2) = 1.01 At this point I am unsure of how to isolate for θ. Any tips are greatly appreciated, thanks!