You may think you have a pretty good grasp of the basics of trigonometry... These CMEP resources invite you to look a little more closely at the familiar trig functions and learn some interesting new ideas.
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice.