Trigonometry of right angled triangles, sine law, cosine law, graphs of trigonometric functions, modelling periodic behaviour, combinations of trig functions
TOK: What can be true for all triangles? How were sine law and cosine law originally thought up? Would similar formulas and properties be possible in non-Euclidian Geometry?
TOOLKIT: Using an online simulator to model periodic motion, model a real-life situation using sinusoidal functions.