Trigonometrical Ratios or Functions https://www.youtube.com/watch?v=Jsiy4TxgIME&t=11sIn the right angled triangle OMP, we have base = OM = x, perpendicular =PM = y and hypotenues = OP =r. We define the following trigonometric ratio which are also known as trigonometric function.(1) Relation between trigonometric ratios (functions)sin θ . cosec θ = 1 tan θ . … [Read more...] about Trigonometrical Ratios or Functions