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Nice problem, isn't it?

Given that \(ABC\) is a right triangle at \(A\) with \(AD\) is an angle bisector of \(BAC\). Prove that \( \frac1{AB} + \frac1{AC} = \frac{\sqrt2}{AD} \).

Note by Duy Vu
1 year, 11 months ago

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Ahmad Saad · 2 weeks, 4 days ago

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