Paper 1 · 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

Also accepted: 66°

ZIMSEC Mathematics Paper 1, June 1999, Q701

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