Add DLMF reference for sin
Add DLMF reference for cos
Add DLMF reference for sec
Add DLMF reference for csc
Add DLMF reference for tan
Add DLMF reference for cot
Add DLMF reference for asin
Add DLMF reference for acos
Add DLMF reference for arctan
Add DLMF reference for acot
Add DLMF reference for asec
Add DLMF reference for acsc
Tan and cot - moved up
Merge branch 'master' into raoulb-trig
Reorder trig exports
remove NL in atan2 docstring
Removed trailing NL in the trig docstrings
Reorder eval method for the ReciprocalTrigonometricFunction class
Add inverse functions for asec/acsc
Handle automatic evaluation of arguments with inverses in the ReciprocalTrigonometricFunction