Tagged: geometry
A triangle ABC is inscribed in a circle of radius 1, with <BAC = 60 degree. Altitudes AD and BE of triangle ABC intersect at H. Find the smallest possible value of the length of the segment AH.
First observe that length of the segment \( AH = 2R\cos{\angle{BAC}} \) , where \( R\) is the circumradius.
So, $$AH = 2\cdot \cos{60^o} = 1$$