Trigonometry SOHCAHTOA: Full GCSE Maths Lesson

A complete, ready to teach lesson on right angled trigonometry (SOHCAHTOA) for GCSE maths, Foundation and Higher. 32 editable PowerPoint slides with teacher notes on every slide.

The lesson takes students from labelling the sides to solving exam style problems:

• Learning objectives and a warm up starter on rearranging and rounding, with answers
• Naming the sides: opposite, adjacent and hypotenuse, with a labelling activity and answers
• SOHCAHTOA explained, plus a clear four step method (label, choose, substitute, solve)
• Finding a missing side, with three worked examples covering x on the top and x on the bottom
• Finding a missing angle using sin⁻¹, cos⁻¹ and tan⁻¹, with two worked examples
• Your turn and mixed practice questions, each with an answer slide
• Problem solving: angle of elevation and the ladder angle
• Exact trig values for Higher tier (0, 30, 45, 60 and 90 degrees)
• Exam style question with a mark scheme
• Common mistakes, an exit ticket with answers, and a key points summary

Sides are colour coded the same way throughout (opposite, adjacent, hypotenuse), which really helps weaker students choose the right ratio. Every question has a worked answer slide, so it suits whole class teaching, cover lessons, intervention and revision. Fully editable.

Ideal for Year 10 and Year 11 (ages 14 to 16) and suitable for AQA, Edexcel and OCR GCSE Maths. Follows on from our Pythagoras’ Theorem lesson.