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The angle of elevation of a jet plane fr...

The angle of elevation of a jet plane from a point A on the grund is `60^0` . After and flight of 30 seconds, the angle of elevation changes to `30^0dot` If the jet plane is flying at a constant height of `3600sqrt(3)m ,` find the speed of the jet plane.

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The correct Answer is:
864 km/hr
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UNIQUE PUBLICATION-TRIGONOMETRY-UNIQUE PRACTICE SESSION
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