JAMB - Mathematics (1995 - No. 45)
In the diagram, find PQ if the area of triangle PQR is 35cm\(^2\)
7cm
10cm
14cm
17cm
คำอธิบาย
\(\frac{1}{2}\)(PQ x 10 sin 30) = 35
PQ = \(\frac{35 \times 2}{10 \sin 30}\)
= 14cm
PQ = \(\frac{35 \times 2}{10 \sin 30}\)
= 14cm