In the figure, PQR is a semicircle while PQ and QR are chords. QS is the perpendicular from Q to the diameter PR. What is the expression for QS?
A.
QS = PS\(\sqrt{SR}\)
B.
QS = \(\sqrt{(PS SR)}\)
C.
QS = 2\(\sqrt{(PS SR)}\)
D.
QS = \(\frac{1}{\sqrt{2}}\)\(\sqrt{(PS SR)}\)
Correct answer is B
No explanation has been provided for this answer.