IAL Pure 1 Trigonometric Ratios exam questions

A trigonometry worksheet for Edexcel IAL Pure 1 (WMA11): sine rule, cosine rule, area of a triangle and trig graphs, with full worked solutions.

This worksheet covers the whole of Chapter 6 (Trigonometric Ratios) of the Pearson Edexcel International A Level Pure Mathematics 1 course, from triangle work through to the graph transformations that WMA11 combines with Chapter 4 material.

What’s covered

The cosine rule, including finding an unknown angle
The sine rule, including the ambiguous case
Area of a triangle using ½ab sin C
Solving problems involving triangles, including 3D and bearings contexts
Graphs of sine, cosine and tangent
Transforming trigonometric graphs

How to use it

Works as homework, as in-class practice, or as revision. Diagram-based questions are included throughout rather than saved for the end, since that is how the topic is examined — students need practice extracting a triangle from a described situation, not just applying a rule to a labelled diagram.

What’s included

Question paper (PDF, printable, with diagrams)
Full worked solutions (PDF) — complete method, not just final answers
Questions arranged in increasing difficulty

Specification

Written for Edexcel International A Level Mathematics, Pure Mathematics 1 (WMA11), Chapter 6. Also suitable for Edexcel A Level Mathematics 9MA0 and AS Mathematics 8MA0, and for any A Level course covering the sine and cosine rules at AS.