* Aim of this 'formulae practice workbook: To help the students to remember, recollect and apply the various formulae in the appropriate place while solving the problems. * Already tested in India among average and below average higher secondary students (11th & 12th std) with very good results. * Theory is not discussed here in detail. * More number of solved problems and problems for practice with solutions. * A self evaluation test with answers. * Practice! Practice! This practice helps you - to discard your pre-conceived ideas of Trigonometry. You can be friendly (familiar) with the 'truck load of formulae' which is frightening you so far. - to solve the problems given in the text book and assignment sheets easily and independently. - to understand the theory given in your text book without any fear. You can do it! No doubt!! * The thorough knowledge acquired here will be more useful not only in Differential Calculus but also in Integral Calculus, Differential Equations etc. * This workbook is available at Amazon.com Wish you all the best! Prof. M. Subbiah Doss