Trigonometry Course Content Angles in a triangle Angles in a triangle part two Angles in polygons Angles in polygons in part two Pythagoras Pythagoras (unused) Pythagoras’s theorem Pythagoras’s theorem part two Proof of Pythagoras’s theorem Pythagoras’s theorem part four Area of a circle Congruent angles Relationship between angles and sides of a triangle More on the relationship between sides and angles in similar triangles Naming sides of right angled triangles Trigonometry Sine tables Using a calculator to find the value of sin Complementary angles Cosine 1 of 2