How can I select the units of the results of inverse trigonometry functions?
The result of an inverse trigonometric function is expressed in the same units as the last argument that you gave to a direct trigonometric function. You can switch at any time either automatically, or by taking a trigonometric function of the desired unit and immediately deleting it. No matter what the units are, you can freely use the result in operations with other quantities. If a result refers to an angle, it has the same numerical value as if it were in radians. The units of circular trigonometric functions are determined independently of the units of hyperbolic trigonometric functions. The display characteristics of the results of inverse trigonometric functions are determined in the same way.
