Update SundialMath.java

CHANGES:
- SundialMath.java now creates objects
- all static methods have been changed to non-static
- added a new getter: getAngleOfHour()
- renamed old getAngleOfHour() methods to setAngleOfHour()
- proper conversion of degrees to radians and back for Math functions

ISSUES:
- doesn't check for proper degrees input ie you can enter 1000 and still get an answer; mathematically, that is correct, but not appropriate for this project; any thoughts? does that matter?

OTHER:
- thoughts? suggestions?