Q3 of 23 Page 1

Solve any the three sub-questions:

In ΔPQR, ∠P = 30°, ∠Q = 60°, ∠R = 90° and PQ = 12 cm, then find PR and QR.


From figure using definition of sin





∴ RQ = 12/2 = 6 cm


∴ QR = 6 cm






∴ PR = 6√3 cm


Therefore PR = 6√3 cm and QR = 6 cm


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