3D Trigonometry Made Easy: The Split View Technique (Grade 11 and 12 Maths)

3D trig questions look scary, but they're just triangles in disguise. In this lesson, you'll learn the Split View technique: pull each triangle out of the 3D diagram, redraw it flat in 2D, and label what you know. Once a triangle stands on its own, it's easy to see what you need and which rule to use. What you'll learn: • Vertical vs horizontal planes, and how to spot them • The formulas you need: SOH CAH TOA, Pythagoras, sine rule, cosine rule and area rule • The 5 steps for solving any 3D trig problem • A full worked example: a 30 m tower with angles of elevation of 40° and 25° • Common mistakes to avoid, like having your calculator in radians or rounding too early Perfect for matric revision, Paper 2 prep, and anyone who freezes when they see a 3D diagram. 👍 Like and subscribe for more maths tips from The Arete Project. 💬 Got a 3D trig question you're stuck on? Drop it in the comments! #3Dtrigonometry #matric #grade12 #mathsSA #mathematicsgrade12 #paper2 #southafrica #studytips #AreteProject