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The angle of elevation of a flying drone...

The angle of elevation of a flying drone from a point on the ground is `60^@`. After flying for 5 seconds the angle of elevation drops to `30^@`. If the drone is flying horizontally at a constant height of `1000 sqrt3` m, the distance travelled by the drone is:
भूमि पर स्थित किसी बिंदु से एक उड़ते हुए ड्रोन का उन्नयन कोण `60^@` है | 5 सेकंड तक उड़ने के बाद उन्नयन कोण कम होकर `60^@` हो जाता है | यदि ड्रोन क्षेतिज रूप से `1000 sqrt3` मीटर की निश्चित ऊंचाई पर उड़ान भर रहा है, तो ड्रोन द्वारा तय की गयी दूरी ज्ञात करें |

A

2000m

B

1000m

C

3000m

D

4000m

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