Trigonometry (SOH CAH TOA) | Edexcel GCSE Foundation | 40 Worked Examples

A complete, hand-written worked-solutions pack on right-angled triangle trigonometry (SOH CAH TOA) for Edexcel GCSE Maths Foundation tier (1MA1). 40 questions build up gently from labelling the hypotenuse, opposite and adjacent, through choosing the correct ratio, finding missing sides with sin, cos and tan, and finding missing angles with the inverse functions, to Edexcel-style worded problems set in real contexts (a ladder against a wall, a wheelchair ramp, angles of elevation and depression, a support wire, a kite, bearings, a roof pitch and a triangular garden). Every question has a clearly labelled sketch and a fully worked solution with one small step per line, a plain-English note on the right of each line saying exactly what was done, and the Edexcel mark-scheme codes (M1, A1, B1 and the P process marks for the worded questions) placed on the lines that actually earn them. SOH CAH TOA is taught from scratch with no jargon, the trap of mixing up the opposite and adjacent is flagged, and the exact trig values for 0, 30, 45, 60 and 90 degrees are included for the non-calculator paper. The harder questions cover combining trigonometry with Pythagoras, two observation points, an isosceles triangle split into two right-angled triangles, a steepness comparison and a show-that surd question. Everything stays inside the Foundation specification: the sine rule, cosine rule and 3D trigonometry are Higher-tier and are deliberately left out. Ideal for revision, homework, cover lessons, intervention groups and one-to-one tutoring. Answers included. Questions are grouped Easy, Standard and Challenging so you can set work by confidence level.