Answer:
QR is the shortest side
Explanation:
∡S is opposite to side QR
∡Q is opposite to side SR
∡R is opposite to side QS
Law of sines states:
QR/sin(∡S) = SR/sin(∡Q) = QS/sin(∡R)
Given that: ∡S < ∡Q < ∡R; then, sin(∡S) < sin(∡Q) < sin(∡R)
In order to satisfy the law of the sines, side QR must be shorter than side SR, and side SR must be shorter than side QS.