For schools and the pass and junior honor classes of universities. The no. Of large examples is very large/ a selection only solved by the student on a first reading. Table of contents: part 1: measurement of angles | trigonometry ratios | simple problems in heights and distance | applications of algebraic signs to trigonometry | trigonometrical ratios of angles| general expressions | .Relations between the sides and the trigonometrical ratios | solutions of triangles | heights and distance | properties of a triangle | quadrilaterals