MathDB
calculate an angle

Source: Ireland 2002

July 5, 2009
geometry proposedgeometry

Problem Statement

In a triangle ABC ABC with AB\equal{}20, AC\equal{}21 and BC\equal{}29, points D D and E E are taken on the segment BC BC such that BD\equal{}8 and EC\equal{}9. Calculate the angle ∠DAE \angle DAE.
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