I have this strange annoying behavior that I am seeing in Visual Studio 2017 Roslyn but I also saw this behavior using Visual Studio 2015 Roslyn and older versions of Visual Micro.
 
Roslyn in Visual Studio 2017 reports too many arguments in function call sin(), but the code compiles just fine.  Other math.h functions are doing this too such as cos() sqrt() atan2().
   
IDE: Visual Studio 2017 15.0.0-RTW+26228.4
Arduino extension for Visual Studio 1.0
IDE: Visual Micro 1702.25.0
Board: Adafruit Feather M0
Arduino IDE: none
   
NavController.cpp
     sin(lat1); 
     //Roslyn in Visual Studio 2017 reports too many arguments in function call sin()

math.h
     extern double sin _PARAMS((double));

Thanks Tim!