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A telegraph post is bent at a point abov...

A telegraph post is bent at a point above the ground due to storm. Its top just touches the ground at a distance of 10 `sqrt3` m from its foot and makes an angle of `30^@` with the horizontal. Then length (in metres) of the telegraph post is
एक टेलीग्राफ का खंभा आँधी के कारण भूमि के ऊपर एक बिन्दू पर झुक गया है। उसका शीर्ष उसके पाद से 10 `sqrt3` की दूरी पर ,भूमि को स्पर्श कर रहा है और क्षैतिज रूप से `30^@` का एक कोण बना रहा है। टेलीग्राफ के खंभे की लम्बाई (मीटर में) कितनी है?

A

20

B

25

C

24

D

30

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CHAMPION PUBLICATION-2015 TIER-II PAPER(17)-EXERCISE
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