Question

8. Stations A and B are 3(1 + 3) km apart. Each station sights an airplane at angle of elevation
30° and 45° as shown in figure. Find the altitude of the airplane.
300
450
3(1 +
3)km​

Answer 1

Answer:

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The speed is 12240 km/h

⇒ 1 hour = 12240 km

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Convert 3 hours 20 mins into hours:

3 hours 20 mins = 3 20/60 = 3 1/3 hours

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Find the distance traveled in 3 hours 20 mins:

1 hour = 12240 km

3 1/3 hours = 12240 x 2 1/3

3 1/3 hours = 12240 x 7/3

3 1/3 hours = 28560 km

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Answer: The plane covered 28560 km in 3 hours 20 mins

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⭐ \textbf {Cheers}⭐