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P and Q are two points on the ground on either side of a pole. The angles of elevation of the top of the pole as observed from P and Q are `60^@` and `30^@`, respectively and the distance between them is `84 sqrt 3` m. What is the height (in m) of the pole?

A

63

B

60

C

73.5

D

52.5

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P and Q are two points on the ground on either side of a pole. The angles of elevation of the top of the pole as observed from P and Q are 60^@ and 30^@ respectively and the distance between the objects is 84 sqrt3 m. The height (in m) of the pole ? P तथा Q एक खंभ के किसी भी एक तरफ भूमि पर स्थित दो बिंदु हैं | P और Q से देखने पर खंभ के शीर्ष का उन्नयन कोण क्रमशः 60^@ और 30^@ है तथा उनके बीच की दूरी 84 sqrt3 है| इस खंभे की ऊंचाई कितनी है ?

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