Answer:
Step-by-step explanation:
Triangle PQR is a right angle triangle.
From the given right angle triangle,
PR represents the hypotenuse of the right angle triangle.
With m∠R as the reference angle,
QR represents the adjacent side of the right angle triangle.
PQ represents the opposite side of the right angle triangle.
To determine PQ, we would apply
the cosine trigonometric ratio.
Cos θ = adjacent side/hypotenuse. Therefore,
Cos 28 = QR/13
QR = 13 × 0.8829
QR = 11.4777
QR = 11.48 to the nearest hundredth.
