If ΔPQR is right angled at Q, PQ = 12 and ∠PRQ = 30°, then what is the value of QR?
  • a)
    12√3
  • b)
    12√2
  • c)
    12
  • d)
    24
Correct answer is option 'A'. Can you explain this answer?

SSC Question

By Naina Malik · Jun 25, 2020 ·SSC
2 Answers
Sandy Messi answered Jun 25, 2020
Since tan (theta) = perpendicular/ base
so, tan 30= 12/QR
1/√3= 12/QR
therefore, QR= 12√3 units.

Naresh Sharma answered 2 weeks ago
Tan30=PQ/QR
1/√3=12/QR
QR=12√3

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