In the diagram above PRQ 90 QPR 30 and PQ 10 cm... - WAEC Mathematics 1995 Question
In the diagram above, ∠PRQ = 90°, ∠QPR = 30° and /PQ/ = 10 cm. Find y.
A
6cm
B
5cm
C
4cm
D
3cm
correct option: b
\(\sin 30° = \frac{y}{10}\)
\(y = 10 \sin 30° = 10 \times 0.5 = 5 cm\)
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