Help your students practise finding missing angles using trigonometry with this clear and scaffolded SOH-CAH-TOA worksheet. This resource guides students through identifying the correct trigonometric ratio, using inverse sine, cosine and tangent, and applying these skills to right-angled triangle diagrams and worded problems. This worksheet is ideal for Year 9, middle school, high school, or introductory geometry/trigonometry classes. It includes worked examples, guided practice, diagram-base