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Start with the right-angled triangle

Start with the right-angled triangle

Right-angled triangle labelled opposite, adjacent and hypotenuse relative to angle theta

A right-angled triangle has one angle of 90∘90^\circ90∘, usually shown by a small square. The longest side, opposite the right angle, is always the hypotenuse.

SOHCAHTOA (Trigonometry) Lesson

  1. IGCSE
  2. /Maths
  3. /SOHCAHTOA (Trigonometry)

Step-by-step lessons covering Edexcel IGCSE Maths SOHCAHTOA (Trigonometry) for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons