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SOHCAHTOA (Trigonometry)
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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 on Edexcel IGCSE Maths SOHCAHTOA (Trigonometry). Each one builds up to exam-style questions. 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