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Two tangents AP and AQ are drawn to a circle with centre O from an external point A, where P and Q are points on the circle. If AP = 12 cm and `angle PAQ = 60^@`, then the length of chord PQ is:
दो स्पर्शरेखा AP और AQ एक बाहरी बिंदु A से क O के साथ वृत्त में खींचे जाते हैं,,जहां P और Q वृत्त पर स्थित बिंदु हैं। यदि AP = 12 cm और `angle PAQ = 60^@`, तब जीवाएँ PQ की लंबाई हैं :

A

12 cm

B

10 cm

C

24 cm

D

16 cm

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