Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2009-part-05 — 172 problems (EN–VI) Question 71

Math Olympiad Vault · MathNet 2009-part-05 — 172 problems (EN–VI)

Question 71

Circle $\Omega$ has radius $13$. Circle $\omega$ has radius $14$ and its center $P$ lies on the boundary of circle $\Omega$. Points $A$ and $B$ lie on $\Omega$ such that chord $AB$ has length $24$ and is tangent to $\omega$ at point $T$. Find $AT \cdot BT$.