Question

The angle of elevation of an aeroplane from a point on the ground is 60°. After 15 seconds flight, the elevation changes to 30°. If the aeroplane is flying at a height of 1500√3 m, find the speed of the plane in km/hr.

Answer 1

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Answer 2

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$\huge\underline\frak\red{note}$

• we convert m/s into km/h by multiplying 18/5

• we convert km/h into m/s by multiplying 5/18