the angle of elevation of a jet fighter from a point a on the ground 60 degree after a flight of 15 seconds the angle of elevation changes to 30 degree if the jet is flying at a speed of 720 km per hour find the constant height. (use root 3=1.732)
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Let h be the height of the figher from the ground. Let x be the destance from the point of the observation.
Tan60=h/x
Let y be a destance travelled in 15 seconds
Tan30=h/x+y
Y=15((720)/60(60)=3
Y=2x
X=3/2
H=(3/2)sqroot3
Tan60=h/x
Let y be a destance travelled in 15 seconds
Tan30=h/x+y
Y=15((720)/60(60)=3
Y=2x
X=3/2
H=(3/2)sqroot3
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