Olandoski - Trigonometry High School - New paperback or softback - X555z

Colenso - Plane Trigonometry - New paperback or softback - 72 - X555z

Murray - Elements of Plane Trigonometry - New paperback or softback - - X555z

Bohannan - Plane trigonometry - New paperback or softback - 22 - X555z

Vyvyan - Introduction to Plane Trigonometry - New paperback or softbac - X555z

Kumar - TRICKS OF TRIGONOMETRY - New paperback or softback - X555z

Borchardt - A New Trigonometry for Schools - New paperback or softback - X555z

Kenyon - Trigonometry - New paperback or softback - 64 - X555z