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Two tangents PA and PB are drawn from an...

Two tangents PA and PB are drawn from an external point P to a circle with centre O at the point A and B respectively on it, such that `angle APB = 120^@`, and AP= 12.5 cm. The length of OP is:
दो स्पर्शरेखाएँ PA और PB एक बाहरी बिंदु P से एक बिंदु पर क्रमशः केंद्र A और B पर O के साथ वृत्त की ओर खींची जाती हैं, जैसे कि `angle APB = 120^@` और AP = 12.5 cm OP की लंबाई है:

A

24 cm

B

25 cm

C

26 cm

D

20 cm

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