Question

The angle of elevation of a jet plane from the point A on the ground is 60°. After a flight of
30 seconds, the angle of elevation changes to 30°. If the jet plane is flying at a constant
height of 3600_/3 m, find the speed of the jet plane.
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Answer 1

Step-by-step explanation:

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Answer 2

Kindly refer to the attachment for your answer.

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