id summary reporter owner description type status milestone component version severity resolution keywords cc 3865 Make inverse trig functions default to radians Steven Watanabe Matthias Schabel "Currently the inverse trigonometric functions do not work for systems that do not contain a unit of angle. To make the library more usable with heterogeneous systems, they should default to radians, since that is the natural unit of angle. " Bugs closed Boost 1.43.0 units Boost 1.41.0 Problem fixed