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09. The angle of elevation of a jet plane from a point A on the ground is60°. After a flight of 30 seconds, the angle of elevation changes to 30°.If the jet plane is flying at a constant height of 3600/3m, the speedof jet plane is :(1) 864 km/hr(2) 108 km/hr(3) 720 km/hr(4) 664 km/hr |
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Answer» esaka answer hoga 1. 864 km / hr |
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