Algebra and Trigonometry: Real Mathematics Real People, 7th e. by Ron Larson, 2015
College Trigonometry, 6th ed. by Richard N. Aufmann, Vernon C. Barker & Richard D. Nation, 2008
Master Math Trigonometry by Ross Debbra Anne, 2009
Trigonometry, 6th ed. by Charles P. McKeague & Mark D. Turner, 2008
Trigonometry, 9th ed. by Ron Larson, 2013
Trigonometry For Dummies by Mary Jane Sterling, 2014
