This key facts covers SOH CAH TOA within Trigonometry (SOH CAH TOA) for GCSE Mathematics. Revise Trigonometry (SOH CAH TOA) in Geometry & Measures for GCSE Mathematics with 19 exam-style questions and 7 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 3 of 6 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 6
Practice
19 questions
Recall
7 flashcards
SOH CAH TOA
SOH: sin θ = OH
CAH: cos θ = AH
TOA: tan θ = OA
How to choose which ratio:
- Label O, A, H from your angle
- Identify which two sides you have or need
- Pick the ratio that uses those two sides
Tip: If you have/need O and H → use Sin. If A and H → use Cos. If O and A → use Tan.