Get Math::Trig Module from CPAN

• CPAN has many Perl modules to help with Trigonometry and Geospatial calculations

• Math::Trig has the basic foundation

• deg2rad() - convert degrees to radians
• rad2deg() - convert radians to degrees
• All the basic Trig functions
• A bonus: basic Great Circle calculations too

• http://search.cpan.org/search?query=Math%3A%3ATrig