3 January 2024

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18 July 2021

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1 August 2020

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14 March 2018

• curprev 16:5716:57, 14 March 2018 Conanc talk contribs 1,023 bytes +1,023 Created page with "Solution 1 First, from triangle <math>ABO</math>, <math>\angle AOB = 180^\circ - \angle BAO - \angle ABO</math>. Note that <math>AO</math> bisects <math>\angle BAT</math> (to..."