Answer:
7.1 in
Step-by-step explanation:
A triangle adds up to 180 degrees, and we know angle S is 90 degrees, so angle U is 180-90-42=48 degrees.
Using the law of Sines, we can say that
sin(90)/9.5 = sin(48)/ side ST
Thus, side ST = sin(48) * 9.5/sin(90) = 7.1 in
