Question

What is tan angle QTR if line PR is tangent to circle T at Q, and TS = 1 cm?

Nevermind, the answer is RQ.

Answer 1

Correct! The answer is RQ. Refer below for an explanation as to why this is:

tan(QTR) = (RQ / QT)

Since Q and S are part of the same circle:
QT = TS = 1

Therefore:
RQ / QT = RQ / 1 = RQ