Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2009-part-05 — 172 problems (EN–VI) Question 62

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

Question 62

Circle $\Omega$ has radius $5$. Points $A$ and $B$ lie on $\Omega$ such that chord $AB$ has length $6$. A unit circle $\omega$ is tangent to chord $AB$ at point $T$. Given that $\omega$ is also internally tangent to $\Omega$, find $AT \cdot BT$.