Question

11. The angle of elevation of a jet plane from a point 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 36003m,
find the speed of the jet plane.
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Answer 1

Answer:

4157.14m/s is the speed of jet plane.

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Answer 2

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