Trigonometry in 2012

Elements of Geometry: Containing the First Six Books of Euclid, with a Supplement on the Quadrature of the Circle, and the Geometry of Solid (Large Print Edition) by Playfair, John

Brief Trigonometry a Text in Twenty Assignments by Crathorne, Arthur R., Moore, Gerald E.

Trigonometry Essentials Practice Workbook with Answers: Master Basic Trig Skills: Improve Your Math Fluency Series by McMullen, Chris

Trigonometry Demystified 2/E by Gibilisco, Stan

Trigonometry for Engineering Technology: With Mechanical, Civil, and Architectural Applications by Powers, Gary

The Humongous Book of Trigonometry Problems: 750 Trigonometry Problems with Comprehensive Solutions for All Major Topics by Kelley, W. Michael