This mathematics tutorial shows students how to use radians whenevaluating trig. functions and solving trig. equations. * Aimed at students in their final two years of high school* Interactive examples and exercises* Written by a Maths teacher with 20 years of teaching experience* Completely free (no Ads).* Works without internet so that you can learn Trigonometry while travelling in the train, bus etc. Internet only required for links to privacy policy and other tutorials. * Made with GameMaker.* Only a 14 MB download