Question 36
TrigonometryIn the diagram above, PQ = 10cm, PS = 8cm and ∠PSR is 60° while ∠SRQ is a right angle. Find SR.
- A.14cm
- B.14√3cm
- C.10cm
- D.10√3cm
Show the answer and explanation
Answer: A (14cm)
Explanation
Drop a perpendicular from P to N on SR. SN = 8 cos 60° = 4cm and NR = PQ = 10cm, so SR = 14cm.