Problem

Source: V.A. Yasinsky Geometry Olympiad 2019 X-XI advanced p1 [Ukraine]

Tags: analytic geometry, area of a triangle, circle



The circle $x^2 + y^2 = 25$ intersects the abscissa in points $A$ and $B$. Let $P$ be a point that lies on the line $x = 11$, $C$ is the intersection point of this line with the $Ox$ axis, and the point $Q$ is the intersection point of $AP$ with the given circle. It turned out that the area of the triangle $AQB$ is four times smaller than the area of the triangle $APC$. Find the coordinates of $Q$.