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From module Special Right Triangles
In rectangle ABCDABCDABCD, AB‾=20\overline{AB}=20AB=20 and BC‾=10\overline{BC}=10BC=10. Let EEE be a point on CD‾\overline{CD}CD such that ∠CBE=15∘\angle CBE=15^\circ∠CBE=15∘. What is AE‾\overline{AE}AE?
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