The textbook uses examples from Indian monuments and cultural contexts to explain key concepts of the subject, including ...

a missing side in a right-angled triangle when another side and an angle are known. a missing angle in a right-angled triangle when two sides are known. In these formulae, the Greek letter θ (theta) ...

The most important theorem we learnt in childhood carries the name of a Greek philosopher, but not necessarily the legacy.

Jack Black gifts us an extremely silly flight of fancy set in a right-angled world, and Hugh Grant has the time of his life in the most perfect movie ever made. Plus: mulled wine in film form!