Make a 2D triangle first
Make a 2D triangle first
In 3D questions, the formulas are the same as in 2D right-angled triangles. The main skill is spotting which flat triangle you need inside the solid.
Make a 2D triangle first
Make a 2D triangle first
In 3D questions, the formulas are the same as in 2D right-angled triangles. The main skill is spotting which flat triangle you need inside the solid.
Step-by-step lessons covering CIE IGCSE Maths 3d Pythagoras and Trigonometry for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.