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A kite is flying in the sky. The length ...

A kite is flying in the sky. The length of string between a point on the ground and kite is 420 m. The angle of elevation of string with the ground is `30^@`. Assuming that there is no slack in the string, then what'is the height (in metres) of the kite?
एक पतंग आकाश में उड़ रही हैं मैदान पर एक बिन्दु से पतंग तक धागे की लम्बाई 420 मी. हैं मैदान से धागे का उन्यन कोण `30^@` हैं मान लीजिए की धागे में कोई ढीलापन नहीं है, तो पतंग की ऊँचाई (मीटर में) कया हे?

A

210

B

`140sqrt(3)`

C

`210sqrt(3)`

D

150

Text Solution

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The correct Answer is:
A
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