When I want to calculate the coordinates of a location (e.g., a nest or burrow) based on distance and bearing from a grid point, this function helps me avoid writing down SOH-CAH-TOA every time. Just note that the bearing in this case is from the grid point (known location) to the unknown location.
## Translate Polar coordinates into Cartesian coordinates
## based on starting location, distance, and bearing
## as.deg indicates if the bearing is in degrees (T) or radians (F)
##if bearing is in degrees, convert to radians