Calc; calc-simplify-units not working as documented for trigometric functions

[David Ongaro]

In Calc do

'sin(45 deg)
u s

Result: 0.0137073546047
Expected result: 0.707106781187

The actual result equals to sin(pi/4) in deg mode whereas the expected
result of "the sine of 45 degrees" is the one documented in
"info:Calc#Trigonometric and HyperbolicFunctions".

The same applies for other trigonometric functions and for other values
of 45 or the 'deg' unit (i.e. 'rad or 'grad').



Emacs  : GNU Emacs 25.0.94.1 (x86_64-apple-darwin15.5.0, NS appkit-1404.47 
Version 10.11.5 (Build 15F34))
 of 2016-06-09
Package: Calc