ECZ 2016 · O-Level Paper 1 — Circle Theorems

For the same circle (tangent at P meets QS produced at T, ∠PQS = 26°, ∠QPR = 42°), calculate PTQ.

Verified working — step 1

The tangent at P meets the DIAMETER PR at 90° - that right angle builds the big angle at P inside triangle PTQ.

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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