The diagram shows a square-based pyramid EABCDEABCDEABCD.
AB=8 cmAB = 8 \text{ cm}AB=8 cm
The point E E\,E is 12 cm vertically above the center of the base.
Calculate the size of angle EACEACEAC. Give your answer correct to 1 decimal place.
22 exam-style questions on Edexcel GCSE Maths 3d Pythagoras and Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.