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Paper 1 · June 1999 · Circle Geometry

In the diagram, $AD$ is the diameter of the circle $ABCD$ . Chords $BC$ and $CD$ are equal and $C\hat{A}B = 33°$ . The side $CD$ is produced to $E$ .

Calculate

B\hat{A}D

, in degrees.

Model answer

66

Also accepted: 66°

ZIMSEC Mathematics Paper 1, June 1999, Q701

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