 Geometry and Trigonometry for Calculus by Peter H. Selby, 18 April, 1975
 Precalculus (6th Edition) by Michael Sullivan, June, 2001
 Algebra and Trigonometry (6th Edition) by Michael Sullivan, 15 January, 2001
 Trigonometry (7th Edition) by Margaret L. Lial, John Hornsby, et all 15 December, 2000
 Precalculus: Graphical Numerical Algebraic by Franklin D. Demana, Clemens Foley, et all July, 2000
 College Algebra and Trigonometry by Richard N. Aufmann, Vernon C. Barker, et all November, 2001
 Algebra and Trigonometry by Roland E. Larson, Robert P. Hostetler, September, 1996
 Precalculus with UnitCircle Trigonometry by David Cohen, 08 January, 1998
 Teach Yourself Trigonometry by P. Abbott, 07 August, 2003
 Algebra and Trigonometry: Functions and Applications (Classic Edition) by Paul A. Foerster, May, 1998
