MathDB
Intersection of tangents to circles passing through two vertices of a triangle

Source: 2018 Pan-African Shortlist - G2

May 7, 2019
geometryTangentsTriangle

Problem Statement

Let PP be a point on the median AMAM of a triangle ABCABC. Suppose that the tangents to the circumcircles of ABPABP and ACPACP at BB and CC respectively meet at QQ. Show that PAB=CAQ\angle PAB = \angle CAQ.