Answer:
the inverse of Hypotenus/adjacent
Step-by-step explanation:
using the trigonometric identity
SOHCAHTOA
where sin = Opposite/ hypotenus
cos = Adjacent / Hypotenus
Tan = Opposite/ Adjacent
in this question we are assuming that ST is the hypotenus
therefore SR or RT could be the opposite or adjacent depending on where the angle given is placed
the ratio of ST : RS = hypotenus / adjacent or hypotenus / opposite
