Episode 23 — 2D & 3D Trigonometry

Solving triangles using 3D Trig

Learners will be able to:

• Describe the 3D coordinate system and its components. • Identify how a 3D problem can be resolved into single triangles for easier calculation. • Calculate the length of a side in a 3D object using Pythagoras' theorem. • Apply trigonometric ratios to calculate angles in 3D problems. • Prove that PQ is equal to PR in a given 3D scenario. • Express PQ in terms of Y and a trig ratio of alpha.