Plane & spherical trigonometry a tetrahedron approach by Mamhot, Millard R., Endam, Joemar C., Mamhot, Alice A., Banagua, Emelyn C., Bantug, Jenette S.

Worktext in college trigonometry by Domingo, Alleli C., Dimasuay, Lynie B., Lawas, Vernel M., Lubag, Sharon P., Almonte, Velimor D.

Plane & spherical trigonomerty a tetrahedron approach by Mamhot, Millard R., Endam, Joemar C., Mamhot, Alice A., Banagua, Emelyn C., Bantug, Jenette S.

Plane trigonometry by Carpio, Joy N., Guillermo, Jaymie M.

Plane and spherical trigonometry text / workbook by Baltazar, Ethel Cecille M., Dy, Ana Liza M., Vidar, Melvin A.

Algebra and trigonometry by Larson, Ron 1941-

College algebra by Larson, Ron 1941-

Table of contents only

Basic algebra and spherical trigonometry by Exconde, Maria Rosario C., Sabino, Lilibeth D., Marquez, Romel L., Fajardo, Ira A.

Trigonometry a worktext by Calingasan, Recto Rex M.

Stewart's algebra and trigonometry by Stewart, James