Triangles P Q R and S T U are shown. Angles P R Q and T S U are right angles. The length of P Q is 20, the length of Q R is 16,
and the length of P R is 12. The length of S T is 30, the length of T U is 34, and the length of S U is 16. Using the side lengths of △PQR and △STU, which angle has a sine ratio of Four-fifths?
